Jones was the second son of Theophilus Jones (1729-1811),[REF] a member of the Irish House of Commons from 1761 to 1800,[REF] and then of the House of Commons of the United Kingdom from 1801 to 1802 [REF].
His older brother Walter[REF] (1754-1839) was governor of County Leitrim, and an MP for Coleraine in the latter years of the Irish Parliament,[REF] and then sat for Coleraine at Westminster for most of the period until 1809 [REF].