Kings-Wems + Hendersons-Thomsons + Gurnetts-Hewitts + Lyons + Letts (and more!)
1841 - Yes, date unknown(
= Descendancy chart to this point, 
= Expand, 
= Collapse)
If you notice any errors, let me know! There are probably quite a few, but I'd love to get this as accurate as possible.
