Sorry to say I have no proof that William Sabin was a Huguenot. In fact I myself don't believe he was.
Taken from the Snow-Estes Ancestry page 293 by Nora E. Snow pub. in 1939 Volume two.we find this: "Long before the time of the edict of Nantes (1598), the Sabin family were settled in Northamptonshire, Eng.Before the middle of the sexteenth century persons of this name were settled at Kilsby in that county, the same village, indeed, where the emigrant Garfield family emigrated,to whom the family might have been related, as it is interesting to note that the earlist Northamptonshire references of this name occur in the wills of the Garfield family.The will of Thomas Gardfylde of Killysbey, dated Apr. 16, 1543, was witnessed by Wylliam Sabyn and John Garfeild of Kilsby, yeoman, in 1614, bequeathed 10s. to Ellen Sabin.We know from the manor rolls of Kilsby which are extant for the reign of Edward VI, that William Sabyn, constable of Kilsby in the second year of that king, made the presentment at a court baron held that year, "guod omnia ad suum officium spectantia bene ordinata sunt ad nunc diem."His name also appears as one of the jurors of the homage, and the name frequently occurs at Kilsby in the subsidy rolls of the sixteenth century.It will be noted that William Sabins; second wife was named Allen, and the name Alyn occurs in the Kilsby court rolls. From which can be doubted the oft repeated statement that William Sabin was a Huguenot, and fled to America from Wales or the south of England, where he had found refuge in flight from France, as tradition has it. He appeared in Rehoboth at the organization of the town in 1643, but when he came to America is not known.Not only a man of considerable culture, he also possessed wealth, as is shown in the account of his estate and gifts for the relieving of the wants of those who suffered from the ravages of the Indians.He was one of the leading spirts of Rehoboth in schools, church and in affairs at Plymouth, Miller, Made a Freeman June 3, 1657. His will, dated June 4, 1685, probated at Boston, July 17, 1687, during the administration of Gov. Andros.The original will is on file in Boston.In it are mentioned sixteen of his twenty children."