I am attaching a screen save I made of the time when Dierdre shared the Baxter Family Tree with Dorothy & Harold. This is from late Season 1, I think the season finale "Hazel's Day". Someone on the crew went to a lot of trouble to create it. Fortunately for that person the tree is rather small, as the Baxters had small families. Harold is apparently the last male Baxter to carry on the family name out of 5 generations of Baxters.