William de LEYBOURNE
William de was born in 1242 in Leybourne, Kent, England.

 Juliana de SANDWICH
Juliana de was born in 1246 in Preston, Kent, England.  She died at the age of 81 in 1327.

 Idonea de LEYBOURNE
Idonea de was born about 1283 in Leybourne, Malling, Kent, England.