Alicia De Tregois (daughter of Robert De Tregois and Sibil De Ewyas)1, 1 was born 1231 in Ewyas Harold, Herefordshire, England1, 1.She married Robert Sitsylt on 1247 in Ewyas Herold, Herehordshire, England, son of Gerald Sitsylt and Mabel Moigne. More About Alicia De Tregois and Robert Sitsylt: Marriage: 1247, Ewyas Herold, Herehordshire, England. Children of Alicia De Tregois and Robert Sitsylt are: