A Random Question, to Some

I was wondering if anybody could help me find a way to get reliable information about the descendants of Louis B. Mayer. Particularly, I'd like to see if he had any children other than the two daughters I've read about in the limited biographies I've been able to find.

See, here's the thing. There's this girl that I know that claims to be the granddaughter of Louis B. Mayer. She has the same last name as he does. That, I guess, is supposed to be part of what makes us believe her. Oh, and she's rich. Rich people don't lie. But on IMDB's biography of Louis B. Mayer (for those of you who don't know, he's a huge movie magnate, one of the three founders of MGM), it says that he was born in 1882 and died in 1957, at the ripe old age of 75. What's more, the Wikipedia biography says that his two children, from his first marriage (which ended in 1947) were both daughters. They were Irene and Edith. Irene was married to David O. Selznick, the legendary producer of Gone With the Wind.

Here's my point. This girl could not have retained the Mayer name directly through Louis B. Mayer. It's not possible, because he had only daughters who married and took the names of their husbands.

Here's the slightest bit of doubt, though. Mayer was married again in 1948, according to IMDB. According to my own research, this girl's father graduated from college in 1970, which would have meant he would have been born in 1947 or 1948. The only possible scenario I can imagine where this man could be the son of Louis B. Mayer is if Mayer had a tryst between his two marriages wherein he impregnated a lady that he did not go on to marry, but who gave the baby Mayer's name anyway.

If anybody can help me get the final details to close this case once and for all, please let me know.

Fargus...