Two probable duplicates for Baderon Fitzwilliam, Baron of Monmouth

They aren’t the same person; one was born in Brittany and died in Wales, and the other was born and died in Wales 100 years later.

The first is grandfather to the second.

I see that but there is still a problem with the dates. Beginning with the elder Baderon hr dies in 1078. His son William is born 13 years after his father in 1087. Then the younger grandson is born only 13 years after his father is born in 1100.

In the book referenced the is a map that shows a date range for William of 1060-1138. This works much better if William is born in 1060 instead of 1087?

Anne I've made some updates to the Overviews and tried to get the trees cleaned up in this area.