Hi Robert, saw your posting of a few years ago. My ancestors from Wm. Brewster are the same, except my next in line instead of Seth, is Samuel and Sarah Miller, of which very little is known of her. Unless things have changed, Elder William Brewster's wife is unknown except her given name was Mary which has been linked with 2 other possibilities and Wentworth is the "favored" one, but un proven. Ironically, my line married into the Wentworth line in Maine and there appears to be some Royalty involved to this name.