There is a James Latimer in the 1821 census for Ireland, age 14, born around 1907 in Gortermone. Don’t know if this is the same person or not. If it is, the other ones listed are:

Alex, b. 1804Andrew, b. 1766Andrew, b. 1809Elizabeth, b. 1815Francis, b. 1812Hannah,b. 1774Mary Anne,b. 1801. They all lived in dwelling #34 for Gortermone, with Andrew & Hannah being the father and mother, and the rest being the kids.