Julius married Mary Margaret Cason on 24 Feb 1820 in Wilson, Tennessee, United States. Mary (daughter of Joseph Cason and Rebecca Miller) was born on 13 Jul 1801 in South Carolina, United States; died on 28 Apr 1893 in Wilson, Tennessee, United States; was buried in Wilson, Tennessee, United States. [Group Sheet] [Family Chart]

1. Mary Williams was born on 4 Dec 1820 in Wilson, Tennessee, United States; died on 7 Sep 1874 in Tennessee, United States; was buried in Wilson, Tennessee, United States.
2. Rebecca Jane Williams was born on 9 Jan 1823 in Wilson, Tennessee, United States; died on 18 Mar 1866 in Wilson, Tennessee, United States; was buried in Norene, Wilson, Tennessee, United States.
3. Joseph Cason Williams was born on 20 Oct 1826 in Wilson, Tennessee, United States; died on 4 Apr 1907 in Wilson, Tennessee, United States.
4. Joshua F. Williams was born on 14 Jul 1828 in Wilson, Tennessee, United States; died on 24 Sep 1894.
5. James Anderson Williams was born on 25 Jun 1830 in Wilson, Tennessee, United States; died on 28 Feb 1905.
6. Mahala Williams was born in 1835; died in 1874.
7. Sarah Williams was born in 1837; and died.
8. Julius Howard Williams, Jr. was born on 6 Mar 1841 in Wilson, Tennessee, United States; died on 1 Apr 1920 in Wilson, Tennessee, United States.
9. Henry B. Williams was born on 5 May 1846 in Wilson, Tennessee, United States; died on 6 Jul 1846 in Wilson, Tennessee, United States.