Geoffroy II Count of Mortagne, 1st Count de Perche ^{1 2}

   Another name for Geoffroy was Seigneur de Mortane, Comté de Perche Geoffroi IV.

  Research Notes:

Source: Ancestral Roots of Certain American Colonists Who Came to America before 1700 by Frederick Lewis Weis and Walter Lee Sheppard, Jr, ed. by William R. Beall & Kaleen E. Beall (Baltimore, 2008), line 153A-23 (Beatrix de Montdidier)
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  Death Notes:

There were a couple of castles called Nogent. Which one was this?

From http://cybergata.com/roots/3303.htm :
"Geoffrey, count of Mortain, the son of count Rotrou, a man eminent for many good qualities, fell sick unto death, and having called about he the lords of le Perche and le Corbonnais, who were vassals to him as count of Mortain, he put his affairs in order with great wisdom. Giving prudent directions to his wife Beatrix, who was the daughter of the count de Rouci, and the lords of his own country, he prayed them faithfully to maintain peace and security, and keep his lands and strong places for his only son Rotrou who had gone in pilgirimage to Jerusalem. Then the brave lord, having duly received all the rites of the church, was made a Cluniac monk and died in the middle of October, at his castle of Nogent, where he was buried; his father having commenced building a monastery there in honour of St. Dionysius the Areopgite, which he richly endowed with land and other possessions."

~Taken from The Ecclesiastical History of England and Normandy, pg. 108

Geoffroy married Béatrix de Mondidier, daughter of Hilduin III de Rameru Count of Montdidier and Adèle de Roucy. (Béatrix de Mondidier died 2 Sep aft 1129.)