'Rebecca, b. 1623-7 in Plymouth or Duxbury; d. after 1654-5, when her father's five children were all living [citing Mayflower Descendant, X, 143-4], and undoubtedly after March 6, 1688-9, when a widow Rebecca proved [citing Merrick Genealogy, G.B. Merrick, 1902, pp. 13-25; Savage, III, 198] the will of William Merrick.'