I recently was able to obtain a marriage certificate for the oldest daughter of Joseph Alvin and Rebecca. Her name was Sarah A. Crosby (aka known as Sadie). She married George Towner on November 18, 1880 in Tolona, Champaign County, Illinois. She is the first of my Grandfather Barney E. Crosby's siblings that I have been able to locate. If this fits anyone was ancestry line would love to hear from you. I do not know where they were living when Rebecca passed away.