William Chamberlain m. Rebecca ---, "marriageable in 1648 and became the mother of thirteen children between Aug. 13, 1649, and Sept. 27, 1671. She was therefore, probably born between the years of 1625 and 1634." "From the will of Sarah [(---)] Shelley it is apparent that Rebecca, the wife of William Chamberlain, was her 'sister'. In legal usage the word 'sister' sometimes meant own sister, sometimes half sister and not infrequently sister-in-law, but the phraseology of this will excludes the latter interpretation..."
