Hello jackhammer,
Just picking up on Captain James Crawford, b.Greenock 1835 and died Calcutta 17.2.1867.
He was my maternal gt gt grandfather and was a sea captain. Many of the Crawford men were involved in shipping until one line went to London. When Captain Crawford died, his widow Margaret (nee Ogilvie) remarried, to Francis William Wymer and the family moved to London and then my line went to Oz.
Family is fairly well documented. You have given some great info to my sister, Virginia, on Archibald McNair Crawford, one of Capt. Crawford's grandsons and a gt. uncle to Virginia and me.
You may have been researching Crawford history for someone else. They can certainly contact me if wished. We have not gone further back than Capt. Crawford's father, James and his wife, Janet Wright.
Good wishes,
Jo