Jean I de Trie
Jean I de Trie (c. 1179–before 1237) was châtelain of Trie in the Vexin, son of Enguerrand II Aiguillon de Trie. In 1190 he confirmed his father's donation to Valle Sainte-Marie abbey, and in the same year married Alix de Dammartin, daughter of Count Aubry II of Dammartin.
Through this marriage his descendants inherited the county of Dammartin: their son Mathieu de Trie became count in 1259, while another son, Renaud, was seigneur de Fontenay.