On 26th May 1978, Fr. John Treanor M.A. Dip.Ed., Parish Priest of Magheralin, became P.P. Tullylish. Deeply interested in Gaelic Football, Fr. Treanor was soon aware of the needs of the local club.

Past glories blended with the present when Fr. Treanor arranged for the complete renovation of out-offices of the Parochial House, Laurencetown, which had been derelict for years. With voluntary labour they were tastefully renovated and decorated. On 28th June 1982, the Bishop of Dromore, Dr. Brooks, blessed and officially opened them as a scout den for St. John's 11th. Dromore, Tullylish C.B.S.I. (Catholic Boy Scouts of Ireland). The following spring, Castle Hill disused National School in Gilford was extensively renovated, at a cost of £6,000. It became the Parish Hall and also a den for the St. Martin's Catholic Girl Guides which had been formed on 13th. March, 1983.

Through the work of an enthusiastic committee, the cemeteries at Clare and Laurencetown were redesigned, with pathways laid throughout and groundwork re-arranged to afford easy maintenance. Much of the manual work was done by Fr. Treanor himself who, by his keenness and example, encouraged able-bodied parishioners to give a helping hand. He preserved property that would otherwise have remained unsightly through neglect and decay. With his committee, Fr. Treanor completed the Ion,, and protracted negotiations with the Department of Education and the contract for the building of the new Bann School was awarded to A. & M. Builders, Toomebridge for the tendered sum of £262,000. Fr. Treanor also arranged the transfer of the Gaelic Football field to the local Tullylish G.F.C. This park was officially opened on 13th. May 2001 by Mr. Liam Mulvihill. Canon Treanor retired in June 1998 and is currently living in Warrenpoint.