I wish I could help. My first known McCready ancestor is Benjamin Franklin McCready Sr., born 1794 in Rehobeth, MD, moved to Crisfield, MD, where he died 1868. He married Elizabeth Thomas 1819. They had 11 children but none of them married a Ward. Surely there is a connection somewhere to your McCreadys. My line is also related to the Sterlings and Nelsons. The book you need is Thirty-Four Families of Old somerset Co., MD by Woodrow T. Wilson, 1977 -- out of print -- I've tried to find a copy to buy, but to no avail. I did see a copy once. If you find anything of interest, please let me know.