Nielsen Hayden genealogy
Ancestors of (Unknown) de Lacy
┌── Roger de Lacy ( - 1106) =>
┌── Gilbert de Lacy ( - Aft 1163 The Near East)
┌── Hugh de Lacy (of Meath, Ireland - 25 Jul 1185)(m. Bef 1155)
│ ┌── William de Monmouth (Between 1060 and 1065 of Monmouth, Monmouthshire, Wales - Bef 1138) =>
│ ┌── Baderon de Monmouth (Abt 1100 Monmouth, Monmouthshire, Wales - Between 1170 and 1176)
└── Rohese de Monmouth (Between 1135 and 1140 - Abt 1180)(m. Bef 1155)
│ ┌── Gilbert fitz Richard de Clare (Abt 1060 - 1117) =>
└── Rohese fitz Gilbert ( - Bef 1166)
└── Alice de Clermont (of Clermont, Oise, Picardie, France - Aft 1136) =>