Was Hamo De Masci related through Hamon "Dapifer"? I could use your help in referencing the sources in this document.
DNA Haplogroup I1-Z138/ Z139+ Massey, Coman (Comyn) De Burgh/ Burgo a.k.a. Conteville/ Comyn line. who took their motto 'ung roy, ung foy, ung loy' from Caen. Hamon Aux Dents according to William of Malmesbury," was the grandsire of Robert de Caen."
http://www.bramhill.net/BramhillInfo/Resources/Hamo%20de%20Masci.pdf