Jubilees 11:1

And in the thirty-fifth jubilee, in the third week, in the first year [1681 A.M.] thereof, Reu took to himself a wife, and her name was 'Ôrâ, the daughter of 'Ûr, the son of Kesed, and she bare him a son, and he called his name Sêrôh, in the seventh year of this week in this jubilee. [1687 A.M.]