Alexandre McGraw, 20, was a passenger in a car that slid off a rural road and into the Tracadie River early last Saturday morning.
The funeral was held at 11 a.m. in a packed church in Pont-Landry, N.B.
McGraw worked in a local general store and was a student at Collège Communautaire du Nouveau-Brunswick.
Éric Gautreault was at the funeral. He said everyone in the area was affected by the tragedy.
"All were from communities around the Tracadie-Sheila area," said Gautreault, "One of the kids was working at the general store here so it really touches the whole Acadian Peninsula. It's really sad and I sympathize with the family."
Cousin Valérie Caissie said McGraw was a nice person and much loved.
"He was very important in the family, we loved him very much. He had a great smile, he was happy and he was just starting out in life. He loved everybody," she said.
The three other victims were 17-year-old Marie-Hélène Gauvin of Pointe Canot, 18-year-old Tommy Losier and 19-year-old Brian Basque, both of Ste-Rose. Their funerals will be held in the coming week.