William Mapother is Tom Cruise's Cousin (PHOTOS). Every so often a celeb has a relative who's famous in their own right, and outside of show business.

You already know A-listers have major talent, major hotness, and a major fan following to match.

For example: President Obama is related to Brad Pitt (9th cousin) on his mother's side.

William Mapother is a first cousin of actor Tom Cruise (whose given name is Thomas Cruise Mapother IV).

In 2011, Mapother starred with Brit Marling in the science fiction film “Another Earth,” which premiered at the 27th Sundance Film Festival in January. Go here for larger photos.

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