For almost 20 yrs I was the North American Rep for Clan Buchan. In that time I researched over 3000 Buchans, and I'm sure that I remember seeing the name Alexander Sheriff. John and Betsy are very comman so they aren't as apparent as an odd name. It would be helpful for me if you could provide a state or place of birth. My charts are kept by state and then I would provide you with the name of the member who was tracing that particular family branch. I have a number of families with strong ties to New York, North Carolina, Toronto, Michigan, Iowa, Texas, Oklahoma, California, Oregon, but the families branched out from there.