I am tracing a tree that has only other family trees as records. I wonder if you could direct me to sources on a Tangwystyl Verch Llywarch who might have been born around 1225, possibly in Menai, Anglesey, Wales. I found that name for births in 1148 and 1168-70. On the tree I am tracing this female was married to John DeMortimer 1235-1282 of Wigmore, Herefordshire. Their only child would be Sir John Lingen Sr (1265-1290), born in Herefordshire, England. Thank you.