The one who knows the most is Robert Champlin of Canada, known as "Canada Bob" amongst the Champlin peeps. There was a "family reunion" of descendents of Geoffrey in Rhode Island in 2003, if I remember right. I was there and we learned a lot. I don't know if there were others or if more are planned. Geoffrey (or Jeffrey) Champlin is the progenitor of the Champlin name in North America. Learn more here: http://www.werelate.org/wiki/Person:Geoffrey_Champlin_%282%29
