Welcome to Rootschat. Not sure what's happened to Valerie who posted the earlier message but she hasn't been here for a few years. Here's to newspaper information from Londonderry Sentinel:
8 Mar.1834- death- On the 28th inst., at Burrough House, Burt, county Donegal, after a protracted and severe illness, Mary, wife of Mr. Falconbridge, Officer of Excise. This lady was the author of Veritas Vincit, a work highly esteemed.
7 Oct.1837- death- On 14th July last, at Peterboro, Upper Canada, aged 20, William the eldest son of Mr. William Falconbridge, formerly of Lisburn.
11 May 1866- marriage- May 3, in the Parish Church, Dunboe, by the Venerable the Archdeacon of Derry, assisted by the Rev. William Wilson, B.A., J. Kennedy Falconbridge, Esq., Richmond Hill, Canada, to Eliza Glenholme, third daughter of the late James Dugan, Esq., of Articlave.
7 Jan.1868- birth- December 16, at Bradford, Canada West, the wife of Mr. John Kennedy Falconbridge, Esq., of a daughter.