Hi Jane
Welcome to Ireland Reaching Out!
There is an Elizabeth Campbell baptised in the parish of Templemichael, Co. Longford on 26th Feb 1826 to a father William and a mother Frances Tanner. Her father was a publican. This family were church of Ireland. Other children included:
Charles 1827, Margaret 1828, Francis 1833 and Mary Ann 1834.
I hope you find this useful. However, if Robert was Elizabeth's son her per-marriage name was not Campbell rather it was her husband's family name?
Best wishes
Clare Doyle
Genealogy Support