Help with family trees.

Sharon is also a genealogist, which isn't an offer, but a note that I've had some exposure.

Genealogical software that's designed to work with real-world families is kind of overkillish for your purposes, since you don't need to record document sources and such. But as something that will allow you to enter a bunch of names and dates, and generate a graphical tree from it, they're great. Here's the first free one that my Googling turned up.