Are you sure the whole family didn't go to Canada? Did William marry before he went?
William Lindsay and Ann Campbell were married in 1800 and had about 8 children in the Cambusnethan area and then emigrated to Canada. But I'm not sure what happened to the rest of John Lindsay and Jean Robertson's offspring.
Looks like Sage has some other input--let me check it out--it looks VERY promising. The children of John Lindsay and Jean Robertson are generally correct, however they are missing Jean Lindsay, b. 1770.
Thanks Lodger & Sage!!! Looks like you're both right, and I can link some of this family together!
Granny G