The following individual does not have a valid birth date and could not be added: Duke of Northumbria Thordau Gunnarson (I2183)
King William II Rufus (1087 - 1100)
King Henry I (1100 - 1135)
King Stephen (1135 - 1154)
Queen Matilda (1135 - 1141)
Queen Matilda (1141 - 1148) (disputed)
King Henry II (1154 - 1189)
King Richard I The Lion Heart (1189 - 1199)
King John (1199 - 1216)