text: In 1105, Henry granted Montgomery to Baldwin de Boulers in marriage with Sybil de Falaise, an illegitimate daughter. (Note: this makes Henry my 26th great-grandfather – Ian).
  Henry holds the record for the largest number of acknowledged illegitimate children born to any English king, with a provisional total of twenty-five. These are:
  Henry invaded Normandy in 1105, and took Caen, Bayeux, and several other places. He completed the conquest in the following year by the defeat and capture of Robert at the battle of Tenchebrai and became duke of Normandy. Robert was imprisoned at Cardiff until his death in 1134.
  In the meantime Henry had become involved in a quarrel with Anselm over the lay investiture of bishops and abbots. In a compromise settlement (1107) the king gave up investiture but retained the right to receive homage from the prelates.