It may be time to stop guessing at baby names — it turns out Kate Middleton and Prince William will name their child Philip if it's a boy.

Sources say the royal couple have already come up with a shortlist of possibilities, including the name of Will's grandfather, the Duke of Edinburgh, according to the Daily Star.

“The name Philip is in the frame for a boy. It will certainly have it somewhere in his name," a source told the Daily Star, adding if it were a boy, Prince William would make the final decision for choosing a name.

Earlier reports suggested other possible names include Elizabeth if it's a girl, along with Diana and Carole as middle names to honour both Will and Kate's mothers, according to Hollywood Life.

“We have a shortlist for both (a boy and girl), but it’s very difficult. My friends keep texting me names,” she said during a visit to Scotland last week.

With only a few months left in her pregnancy (Kate revealed her due date is around mid-July), Kate may have yet another thing to worry about.

Another report says Prince William also wants to film the birth — something Kate's not so fond of.

Is Philip the right choice for a boy's name? Let us know in the comments below:

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  • Alexandra

    <strong>FAMILY TREE</strong>: Queen Elizabeth II (a.k.a. Elizabeth Alexandra Mary), Queen of the United Kingdom and the Commonwealth and Prince William's grandmother. <strong>MEANING:</strong> <em><a href="http://www.thinkbabynames.com/meaning/0/Alexandra" target="_blank">Alexandra is of Greek origin and means ‘man’s defender.’</a> </em> WHY WE LIKE IT: When it comes to betting on royal baby names, Alexandra is a frontrunner, and it’s no wonder why. The classic name favours royal tradition. The <a href="ttp://www.thestar.com/news/world/2013/04/11/princess_alexandra_royal_baby_name_bets_surge.html" target="_blank">Queen’s great-grandmother was named Alexandra</a>. Also, Princess Alexandra, the only current royal household member to bear the name, is a cousin of the Queen and is <a href="http://www.cbc.ca/news/world/story/2013/05/02/f-royal-baby-name.html" target="_blank">known as a hard worker</a>; she carried out <a href="http://www.examiner.com/article/princess-alexandra-is-sick-cancels-engagements" target="_blank">110 engagements in 2012</a>.

  • James

    <strong>FAMILY TREE</strong>: James Middleton, Kate Middleton's brother. <strong>MEANING</strong>: <em><a href="http://www.thinkbabynames.com/meaning/1/James" target="_blank">The name James means ‘he who supplants’ and is of Hebrew origin. </a></em> <strong>WHY WE LIKE IT</strong>: James is a favourite among the common people. In a YouGov poll of 1,800 people, a whopping <a href="http://www.firstpost.com/world/queen-victoria-or-king-james-peoples-choice-for-royal-baby-name-954263.html" target="_blank">19 per cent favoured James for a baby boy</a>.

  • David

    <strong>FAMILY TREE</strong>: Harry, Prince of Wales (a.k.a. Henry Charles Albert David) and Prince William's brother. <strong>MEANING</strong>: <em><a href="http://www.thinkbabynames.com/meaning/1/David" target="_blank">David has Hebrew origins and means ‘beloved.’</a></em> <strong>WHY WE LIKE IT:</strong> David Beckham <a href="http://www.mirror.co.uk/news/uk-news/royal-baby-name-david-beckham-2054439" target="_blank">suggested his name might be a good fit for Will and Kate’s first child</a>. The soccer star is pretty much British royalty, so who are we to argue?

  • Charlotte

    <strong>FAMILY TREE: </strong>Philippa (Pippa) Charlotte Middleton, Kate’s younger sister. <strong>MEANING</strong>:<em> <a href="http://www.thinkbabynames.com/meaning/0/Charlotte" target="_blank">Charlotte, of Old German origins, means ‘free man.’</a></em> <strong>WHY WE LIKE IT</strong>: Charlotte is <a href="http://www.gmanetwork.com/news/story/317775/showbiz/showbizabroad/royals-waiting-by-telephone-for-kate-s-baby" target="_blank">another favourite in betting circles for obvious reasons</a>. This name has historical royal ties -- Queen Charlotte was King George III’s wife – and it’s still quite popular today, according to online baby name guide Nameberry. It <a href="http://nameberry.com/blog/girl-names-2013-our-100-most-popular-so-far#more-26046" target="_blank">earned second place on the site’s annual ranking</a>, and parents love its “feminine yet grownup” feel.

  • Elizabeth

    <strong>FAMILY TREE:</strong> Queen Elizabeth II, Queen of the United Kingdom and the Commonwealth and Prince William's grandmother. <strong>MEANING:</strong> <a href="http://www.thinkbabynames.com/meaning/0/Elizabeth#qwA1pvxW5c1iTKTx.99"><em>Elizabeth is of Hebrew origin and means God's promise or God is my oath.</em></a> <strong>WHY WE LIKE IT: </strong> Why wouldn't you want to be named after one of the most powerful women in the United Kingdom? Even though sources report that the couple has decided to use <a href="http://hollywoodlife.com/2012/06/11/prince-william-kate-middleton-baby-plans-name-princess-diana/">Elizabeth as one of two middle names</a>, Elizabeth not only honours the baby's great grandmother, but Kate Middleton's middle name is Elizabeth as well.

  • George VI

    <strong>FAMILY TREE:</strong> King George VI was King of the United Kingdom from 1936 to 1952. <strong>MEANING:</strong> <a href="http://www.thinkbabynames.com/meaning/1/George#zuPdDDIpXvFRlxtj.99">Originally of Greek origin, the meaning of George is "farmer". Also there is the story of Saint George, a knight who became the patron saint of England and achieved legendary status after his struggle with a fire-breathing dragon.</a> <strong>WHY WE LIKE IT: </strong> Besides being a dragon slayer, the name George <a href="http://www.britroyals.com/royaltree.htm">goes back to the Royal family's history books since 1660</a>. George VI was also the last male figure in power — this title currently belongs to Queen Elizabeth II.

  • Diana

    <strong>FAMILY TREE:</strong> Princess Diana, The Princess of Wales and Prince William's mother. <strong>MEANING:</strong> <em><a href="http://babynamesworld.parentsconnect.com/meaning_of_Diana.html">Diana is derived from either an Indo-European root meaning 'divine' or from the Latin word 'diviana.'</a></em> <strong>WHY WE LIKE IT: </strong> After Princess Diana's tragic car crash in 1997, Diana would be a wonderful tribute to remember Lady Di. Again, sources say the couple plan on using Diana as a middle name, but we would love to see Diana used as the first name.

  • William Jr.

    <strong>FAMILY TREE:</strong> Prince William, Duke of Cambridge and father. <strong>MEANING:</strong><em> <a href="http://www.thinkbabynames.com/meaning/1/William#kRsY6f1d4xSc9wCW.99">William is of Old German origin and means protection.</a></em> <strong>WHY WE LIKE IT: </strong> Maybe a reason to follow in his father's footsteps, William Jr. may be a suitable name if the couple had a baby boy. Prince William has always been known for his <a href="http://www.biography.com/people/prince-william-9542068">good grades, his love for sports and being a philanthropist.</a>

  • Margaret Rose

    <strong>FAMILY TREE:</strong> Princess Margaret, Countess of Snowdon, was Queen Elizabeth's sister. <strong>MEANING:</strong> <a href="http://www.thinkbabynames.com/meaning/0/Margaret#TXLuZUx8EPt4sFuw.99"><em> Margaret is of Greek origin and means pearl.</em></a> <strong>WHY WE LIKE IT: </strong> Keeping it in the family, we like that fact that Princess Margaret was the Queen's youngest and only sibling. Margaret lived a life of controversy when it came to her love life and divorce, but <a href="http://www.telegraph.co.uk/news/obituaries/1384429/H-R-H-The-Princess-Margaret.html">she was remembered for her affection and love for her family</a>, according to The Telegraph. Plus, so many good nickname possibilities!

  • Frances

    <strong>FAMILY TREE:</strong> Princess Diana's mother's name was Frances Shand Kydd. <strong>MEANING:</strong><em> <a href="http://babynamesworld.parentsconnect.com/meaning_of_Frances.html"> Frances, which comes from old French, means to be free.</a></em> <strong>WHY WE LIKE IT: </strong> Another way to keep a grandmother's name in the family, authors have described her as <a href="http://www.dailymail.co.uk/news/article-305277/Tragic-life-Frances-Shand-Kydd.html#ixzz2DM6a2WrQ">"certainly complicated" but also "funny, warm, intelligent and energetic,"</a> according to The Daily Mail. We also like this name because it could be used both for a baby girl or boy.

  • Victoria (Or Victor)

    <strong>FAMILY TREE:</strong> Queen Victoria <a href="http://www.guardian.co.uk/uk/2011/may/12/queen-elizabeth-second-longest-reigning-monarch">spent 63 years on the throne. </a> <strong>MEANING:</strong> <em><a href="http://www.thinkbabynames.com/meaning/0/Victoria">Victoris of Latin origin and means victory.</a></em> <strong>WHY WE LIKE IT: </strong> Queen Victoria continues to be the family's longest reigning monarch and the longest reigning female in power. As a child, she was known as a "patient rebel" — <a href="http://www.bbc.co.uk/history/british/victorians/queen_victoria_01.shtml">always aiming to be "good" but also very strong-minded, </a>according to Professor Lynne Vallone.

  • Charles

    <strong>FAMILY TREE:</strong> Charles, Prince of Wales, father of Prince William. <strong>MEANING:</strong><a href="http://www.thinkbabynames.com/meaning/1/Charles#m61zdhqFAc4ViKV8.99"><em> The name is Old German and means free man.</em></a> <strong>WHY WE LIKE IT:</strong> Staying true to a father-son bond, royal sources have said that Prince William has <a href="http://www.telegraph.co.uk/news/uknews/theroyalfamily/8165275/Prince-William-Let-my-father-become-King.html">been very supportive of his father and that they share a closer relationship</a>, according to the Telegraph. Who knows, maybe this is a trait that will continue with Prince William's son.

  • Jason

    <strong>FAMILY TREE:</strong> Actually, this name isn't in the family — but it could be. <strong>MEANING:</strong> <em><a href="http://babynamesworld.parentsconnect.com/meaning_of_Jason.html">Jason means the healer.</a></em> <strong>WHY WE LIKE IT: </strong> It may not be part of the Royal family's family tree just yet, but "Fledgling Jason Steed" is <a href="http://www.dailymail.co.uk/femail/article-2162555/Prince-William-30-things-know-Duke-marks-30th-birthday.html">one of Prince William's favourite books, according to The Daily Mail</a>. The story follows an 11-year-old boy named Jason Steed who is destined to save himself and his country from a nuclear threat.

  • Smythe

    <strong>FAMILY TREE:</strong> Okay, we're throwing this one out there but hear us out. <strong>MEANING:</strong> Smythe is <a href="http://www.thinkbabynames.com/meaning/1/Smythe#JcjQC8yGuqc40VS4.99">Old English for 'blacksmith.'</a> <strong>WHY WE LIKE IT: </strong> Kate Middleton has been seen donning a Canadian-made <a href="http://www.huffingtonpost.ca/2012/07/31/kate-middleton-olympic-outfit_n_1723426.html">Smythe blazer several times</a>, including during the 2012 London Olympic Games. And who doesn't like the sound of Smythe for a baby girl? At least it doesn't rhyme easily.

  • MORE: Kate Middleton's Style Evolution

    Back row, third from left.

  • Undated (St. Andrew's School,1986-1995)

    Front and center.

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