I just started a new game in Appaloosa Plains with a Sim by the name of Kerry Lardon; went through the usual almanac of time stuff etc. etc.
Turns out her two descendants both have the last name Schmidt (a child and a Young Adult), the same as a Benjamin in the local town. Is it just me or is the game predicting that I'll marry her to Benjamin? They haven't even met!
P.S. Similar effect with another self-made Sim, Neville Moore; He has two Young Adult descendants of surnames Moore and Bird. The second Sim makes me think the game is predicting an affair with one of the Bird sisters.