« Reply #11 on: Monday 12 September 16 04:44 BST (UK) »
"the male line relates to inheritance, wealth and power"
I think that's the key element here. Suppose that my brother wanted to join this 'society' and provided sufficient DNA evidence to qualify for membership. He would be welcome to join but I wouldn't, even if I presented DNA evidence to show that he and I were full siblings. I would be equally a Plantagenet descendant but disqualified from membership by lack of a Y chromosome.
Wiltshire: Banks, Taylor
Somerset: Duddridge, Richards, Barnard, Pillinger
Gloucestershire: Barnard, Marsh, Crossman
Bristol: Banks, Duddridge, Barnard
Down: Ennis, McGee
Wicklow: Chapman, Pepper
Wigtownshire: Logan, Conning
Wisconsin: Ennis, Chapman, Logan, Ware
Maine: Ware, Mitchell, Tarr, Davis