The following individual does not have a valid birth date and could not be added: Petronilla, of France (I1928)
King Stephen (1135 - 1154)
Queen Matilda (1141 - 1148) (disputed)
King Henry II (1154 - 1189)
King Richard I The Lion Heart (1189 - 1199)
King John (1199 - 1216)
King Henry III (1216 - 1272)