Gilbert Bertha 
John Roaps James
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| Gilbert Bertha |
| John Roaps James
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Gilbert FitzBaderon, lord of Monmouth
abt 1135 - 1189
Bertha (unknown)
?? - ??
Married: ?? - ??
John FitzGilbert de Monmouth, lord of Monmouth
abt 1182, Monmouthshire Wales - 1248, Monmouthshire Wales
Roaps (Robert) de Monmouth
?? - ??
James FitzBaderon
?? - 1159