[The_Reader_David]

I thought it was only us Orthodox Christians who still (or maybe ever) regarded second cousins as falling under the taboo against incest (we forbid marriages, and would regard fornication as incestuous, out to the seventh degree — second cousins once removed, or first cousins three time removed).

[grey_whiskers]

I don't mean to sound like a pain, but I'm betting that artificial insemination and anonymous sperm donors (sperm banks, that is, not "I slept with eight men last week and don't know which one got me pregnant") are going to make keeping track of these things a LOT harder.

See this for example.

Cheers!