Kavanagh, Leslie J. was born on September 25, 1866 in Litherland, England. Son of John Thomas and Annie (Leslie) Kavanagh.
Educated St. Joseph’s College, Louvain, Belgium. St. Francis Xavier, Liverpool, England. Marist College, Brookland, District of Columbia.
Marist Seminary, Belley, France. Doctor of Laws, Duquesne U., Pittsburgh, Pennsylvania, 1926.
Ordained priest R.C. Church, 1903. Professor rhetoric, Jefferson College, Convent, Louisiana, 1897-1899, 1901-1903. Appointed pastor Our Lady of Lourdes Church, 1905.
Appointed military vicar general of Catholic chaplains, United States Army and Navy Gulf Vicariate, 1918. Domestic prelate, 1919. Compiler of Crown Hymnal (children’s edition and organist’s edition), 1912.