Re your query about Rebecca Chandler and her marriage to Joshua D. Welch, you may already know that the IGI has an entry submitted by an LDS Church Member showing this marriage occurring in Quebec in 1845, and stating that Rebecca was born in 1811, the daughter of Barnabas Chandler and Susan formerly Houghton. I cannot locate either of them in the Ontario 1871 Census or the 1881 Canadian Census. Dick Chandler in Salmon Arm, British Columbia, Canada