William de St. Maur 
William de was born in Woundy & Penhow, Monmouthshire, England. William de's father is Roger de St. Maur. He is an only child.
They had two sons named Roger II de St. Maur of and William II de St. Maur of Undy &.
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Children
Roger II de St. Maur of Penhow
Roger II de St. Maur of was born in Woundy, Monmouthshire, England. Roger II de St. Maur of is no longer alive.
William II de St. Maur of Undy & Penhow
William II de St. Maur of Undy & was born in Penhow, Monmouthshire, England. He died in 1271.
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