The Shadrick and Meshack I have around 1780 were brothers to my ancester - William - which was a twin to Shadrick. I have their father as being Meshack Biddison married to Sophia Bergon in 1750. They had 5 sons. The father Meshack had a father named Jerry Biddison which is said to came from Wales about 1700 (possibly on a Welch Prison boat). I don't have a record of a name change - the 1790 Maryland Census does show Mashack and four sons with Biddason as a last name. My relative, William, kept the name.