Hello bevj,
My father hired a researcher in Scotland in the 1980s, long before the internet was popular, to look up his Bell ancestor. The researcher was able to find Robert's parents and wife in the local parish records in Elgin. She found land ownership records for Robert's wife, and was the one who reported to my father that Samuel Bell and his wife Mary had two daughters in addition to son Robert. I'm not certain why the daughters' information cannot be found on the familysearch website.
M.A.