Sorry cant help you look up census, have you seen ros davies website
freepages.genealogy.rootsweb.com/~rosdavies/SURNAMES/G/Gillespie.htm
examples
Thomas GILLESPEY . Annahilt of Ballykeel Lougherne; will probated 1835 IIW V4 p48
Thomas GILLESPIE . Annahilt of Ballykeel Lougherne; died 2 Aug 1897 aged 82; husband of Nellie; buried Cargacreevy Presbyterian graveyard MIs
Good luck in your quest, Jim