Medieval monarchs ruled England from the arrival of William the Conqueror in 1066 until the death of Richard III in 1485 after which time England was ruled by Tudor kings.
Medieval monarchs in our family tree are:
William the Conqueror (ruled from 1066 to 1087)
Henry I (ruled 1100 to 1135 after the death of his brother, Rufus)
Matilda (daughter of Henry I should have been Queen but was usurped by her cousin, Stephen)
Henry II (son of Maltilda ruled after the death of his uncle from 1154 to 1189)
John (ruled from 1100 to 1216 after the death of his brother, Richard)
Henry III (ruled from 1216 to 1272)
Edward I (ruled from 1272 to 1307)
Edward II (ruled from 1307 to 1327)
Edward III (ruled from 1327 to 1377)
One of the sons of Edward III and Phillipa de Hainaut was John of Gaunt, Duke of Lancaster. Their daughter, Joan Beaufort married James I of Scotland. The direct family line can then be traced through Scottish families until the nineteenth century.