Sibyl de NEUFMARCHE 
Sibyl de was born before 1093 in Aberhonwy, Brecon, Wales. Sibyl de 's father was Bernard NEUFMARCHE and her mother was Nesta verch OSBURN. She was an only child. She died after 1143 in Gloucestershire, England.
They had a daughter named Margaret de .
-
Children
Margaret de GLOUCESTER
Margaret de was born in 1126 in Gloucester, Glkoucestershire, England. She died at the age of 20 in 1146.