The white and brown Chinese goose named Kate has not been seen since March 21, leaving her partner William the lone goose in a pond also occupied by ducks, said Helma Oonk, manager of the Glenwood Cemetery in Picton, Ont.
"It's terrible," Oonk said.
The geese, considered pets, had been nameless for years until the royal couple inspired the names William and Kate, Oonk said.
Ontario Provincial Police in Prince Edward County are investigating. Police told CBC News that witnesses reported seeing youths down by the cemetery pond with a bag after shooting pellet guns. Kate's carcass has not been found.
Anyone with information about this case is asked to call Prince Edward OPP at 1-888-310-1122 or Crime Stoppers at 1-800-222-8477.