Yes, John A. and Margaret had a son Michael b. 1804, d, 5 Nov 1895
m. 17 Mar 1836 Eliza Densmore.
children:
Samuel Densmore MCCULLOCH 1838 – 1922
John MacArthur MCCULLOCH 1840 – 1919
Louisa MCCULLOCH 1843 – 1928
Simon MCCULLOCH 1845 – 1943
Letitia MCCULLOCH 1847 – 1892
Elizabeth McCulloch 1851 –
Margaret MCCULLOCH 1851 –
George D. MCCULLOCH 1854 – 1928
Allen MCCULLOCH 1857 –
Minerva MCCULLOCH 1862 –