Sorry, my first reply to your posting went on as a new message, not a response. I've found the same info in my research about Crawford being a sept of Clan Lindsay. I forgot to mention that I am researching Patrick Crawford of SC or Belfast, who appears to the be patriarch of a long line of Crawfords who populated St. Tammany Parish in Louisiana in the early 1800s. I'll keep an eye out for your ancestor. Good luck.