While Marjorie has been visiting her family on the west coast, I've been playing in ancestry.com. Donald MacKay Rippey (Sr.) wrote "Susquehanna Saga", an account of Captain John Rippey and his wife, Mary Orson, and their thirteen children (2 sets of twins), as well as a visit he and his family made to Lower Chanceford Township, York County, PA and to No. 9 Church in Ontario County, NY. While I've put it on Google Docs, I haven't "published" it because I was hoping to contact his descendants for their permission first.
So this week I tried tracing that family forward and back, using the info Donald put in the Saga. I also tried filling out some of the other lines--Ann and Margaret, the older twins, married Thomas McCauley and James Stewart. The McCauley's moved with the Rippeys, but the Stewarts stayed in York. The Stewarts in York may exceed the Smiths in Ontario in numbers, so I don't have a sense of completion. But then, expecting completion in a work of genealogy is fatuous.