Sir Hamon III de Massey, 3rd Baron of Dunham-Massey was born circa 1129 in England, United Kingdom to Hamon II de Massey (c1100-c1140) and Eleanor de Beaumont (c1103-) and died circa 1216 England, United Kingdom of unspecified causes. He married Agatha de Theray (c1140-aft1190) .
"Birkehedde Priory - This priory was, as appears from different writers, also called Bricheved, Byrket and Burket-wood priory. It was founded in the latter end of the reign of Henry II. or in that of Richard I. by Hamon Massey, third baron of Dunham Massey, who placed therein sixteen Benedictine Monks........In the Monasticon are two charters of the said Hamon Massey. In the first, he grants to this monastery in free alms, half an acre of land at Dunham, and an acre at Lacheker, with the advowson of the church of Bowdon; and in the other, the liberty of choosing their own prior, granted before by Pope Alexander; from whence it seems, as if the papal permission for such election was not then sufficient without the confirmation of the patron. --The Antiquities of England and Wales, Volume 1 by Francis Grose
Children
| Name | Birth | Death | Joined with |
| Isabel de Massey (c1155-c1214) | 1155 England | 1214 England | Hugh de Dutton (c1152-1230) |
| Cicely de Massey (-1186) | 1156 England | 1186 England | Richard de Fitton (-1210) |
| Hamon IV de Massey (c1160-aft1250) | 1160 England, United Kingdom | 1250 England, United Kingdom | |
| Agatha de Massey (c1168-) | 1168 England | Joscelyn de Hellesby (c1165-) | |
| Hugh de Massey (c1170-) | |||
Footnotes (including sources)