Wilfred

Wilfred Toadflax is a mischievous little mouse in Jill Barklem’s Brambly Hedge book series and tv show. He is one of the main characters.

Wilfred is also featured (only once, I believe) in Harry Potter, as the name of a statue in Hogwarts, called Wilfred the Wistful.
Edit: I checked and it is Wilfred the Wistful not the Wise.

Wilfred Zaha, Ivorian/English striker, he plays actually in Crystal Palace FC.

Bill Bixby, American actor best known for his role as Dr. David Banner on The Incredible Hulk TV series. His full name was Wilfred Bailey Everett Bixby III.

Wilfred Mott is the grandfather of Doctor Who companion Donna Noble.

Scottish actor David Tennant (born David John McDonald) and his wife Georgia Moffett have a son named Wilfred, who was born 2 May 2013.

Wilfred is the name of an Australian TV show (2007-2010) and its American remake starring Elijah Wood (summer 2011, currently airing on FX). The basic premise is that the main character sees Wilfred, owned by his girlfriend (or attractive neighbor, in the US version), as a man in a dog costume, while everyone else sees Wilfred as a normal dog, and the two strike up a complicated friendship. The owner sometimes calls Wilfred "Wilfy" which is cute but the entire show definitely makes it harder for me consider ever naming a child Wilfred! I like that Jason Gann reprised his Role as Wilfred for the 2011 version. Depending on what kind of comedy you like, you'll either find the show terribly bogan or laugh-out-loud funny.

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Australian show: http://en.m.wikipedia.org/wiki/Wilfred_(TV_series)
American show: http://en.m.wikipedia.org/wiki/Wilfred_(U.S._TV_series)

Two famous bearers of this name - British World War I poet Wilfred Owen (1893-1918), who was killed in action, and British radio and television personality Wilfred Pickles (1904-1978), who with his wife Mabel presented the 'Have A Go' radio series of the Forties and Fifties.

A famous fictional Wilfred is Wilfred of Ivanhoe in the novel by Sir Walter Scott.