John married Mary "Molly" Fields.
They had the following children:
+ 2 F i Frances "Fannie" Harrison was born on 4 May 1797. She died on 27 Nov 1872. + 3 F ii Elizabeth Harrison was born about 1802. She died on 8 Oct 1874. + 4 F iii Susan Harrison was born on 9 Apr 1805. She died on 22 Jan 1890.