Hi there,
I have been having a few problems tracing this line also.
From what I have found James Calder (b. 1779 approx.)married Nancy Lindsay (b. 1784 approx.)and had 8 children; John (b. 1809), Peter (b. 1815), Horatio (b. 1806), Elizabeth (b. 1813), Nancy (b. 1805), William (b. 1837), George (b. 1823), and Henry (b. 1815).
The problem I am having is whether Nancy Calder is the same as Ann or Anne Calder as I am from that line (I think!!!!)