Michael, I am also related to Coolidge through my Father's Mother's side of the family. The line follows the Southard line back to Annica Antonise van Salee ad then to her sister Sarah Anotonise van Salee, then to her daughter Sarah Morgan, then to her husband Joseph Morgan Jr., then to his his sister Mary Morgan Lathrop, then to her huband Deacon Joseph Perkins, tn to his sister Judith Perkins, then to her son Jacob Brown,then to his son Adam Brown, then to his son Adam Brown Jr., then to his son Israel Brown, then to his daughter Sally Brewer, and then to her husband, Calvin Galusha Coolidge.
Hope this helps. What I did first was type his name in while working from my page to see if there was any connection. Use the Master Page for the most and best information. Good Luck!