Edward IV of England and his brother Richard III of England , both sons of Cecily Neville , Duchess of York , would have shared the same mtDNA haplogroup J1c2c .
Head entity: cecily neville, duchess of york Q238004 15 16 17 18 19 20
Tail entity: richard iii of england Q133028 7 8 9 10
Relation (head \u2192 tail): P40
Inverse relation (tail \u2192 head): P25