My family comes from Richard's son Robert, then his son David.
I've been casually tyring to figure out where exacty we come from before Richardus and Anna. Apparently, Richardus and a Robert Tonks show up in the Bitterly register around the same time, so I think it's safe to assume they are brothers.
Also, from what I understand, we were Tonks up until Richard Tunks. Does anyone have any idea of why or when the switch happened?