Andrew Allen Kennedy was born in Ballyrainey House, Newtownards, in 1788, the son of Hugh Kennedy of Ballyrainey and Susannah Kennedy of Ballymaglaff, Comber. He married Annabella Campbell on the 15th September 1808 in Portpatrick, Wigtownshire, Scotland. The witness was Robert Kennedy Esq., of Comber, County Down. Annabella lived at 40 Dame Street, Dublin where her father, John Campbell was a stock broker
Andrew Allen Kennedy, of the British and Irish Fire and Westminster Life Offices, Having been duly appointed a Stock Broker, respectfully requests from the Friends of his late Father-in-law, Mr. John Campbell, a continuance of their favours. 40 Dame-street, 2d August, 1820. [Freeman's Journal, Aug 02, 1820 and Aug 09, 1820]
They had five children, two of whom, Hugh and Martha, died in infancy. They are buried in St. Werburgh’s, in Dublin. His daughters, Catherine and Susan, both married. His son, John Campbell Kennedy, became a solicitor.
Andrew Allen Kennedy, of Mount Pleasant, died young in 1821, aged only 29. He is also buried in St. Werburgh’s.