One of the more multitudinous families in the literary and verbal arts are the Therouxs. Pretty much all the Theroux you hear about these days are are relatives. I was looking up Justin Theroux, an actor (he played the director in Mulholland Drive and starred in the recent series The Leftovers) and screenwriter (he cowrote Tropic Thunder), and sure enough, he’s related to all the other Therouxs:
Theroux is the nephew of the travel writer and novelist Paul Theroux, novelist and poet Alexander Theroux, author Peter Theroux, and novelist and educator Joseph Theroux; he is the cousin of British journalists and documentary filmmakers Louis and Marcel Theroux. His father is of half French-Canadian and half Italian descent. Through his mother, Theroux is a great-great-grandson of financier, banker and railroad magnate H. B. Hollins, and of music critic and author Gustav Kobbé.