Read this piece in The Week magazine(Dec 4, 2005):

Zionnghaka,70, a tribal Christian cult leader, is a happy old man with 15 wives and more than 100 children. Though three wives deserted him and a few died, Zionnghaka faithfully followed tradition. Apparently he couldn't keep pace with his father Challianchana, the founder of the Channa cult which permits polygamy; he had 50 wives and unccountable children! The cult is now spread over four generations and boasts of 1,600 members. Hard work pays!

So if you think that Tarzans no longer exist, think again!!