|Reference style||The Most Reverend|
|Spoken style||My Lord|
Born in the parish of Kilmore, County Cavan, Ireland on 3 April 1847, he was ordained to the priesthood in circa 1870. MacGennis was the parish priest of Drumlane from 1886 to 1888. He was appointed the Bishop of the Diocese of Kilmore by Pope Leo XIII on 21 February 1888 and was consecrated on 15 April 1888.
- Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I., eds. (1986). Handbook of British Chronology (3rd, reprinted 2003 ed.). Cambridge: Cambridge University Press. ISBN 0-521-56350-X.
- Moody, T. W.; Martin, F. X.; Byrne, F. J., eds. (1984). Maps, Genealogies, Lists: A Companion to Irish History, Part II. A New History of Ireland. Volume IX. Oxford: Oxford University Press. ISBN 0-19-821745-5.
|Catholic Church titles|
|Bishop of Kilmore