[1] Bainomugisha was born on 12 July 1961, at Kashumba, in present-day Isingiro District in the Western Region of Uganda.
He served as priest in the Roman Catholic Archdiocese of Mbarara until 2 July 2005.
[1] Archbishop Bainomugisha holds a degree of Doctor of Philosophy in Canon Law, obtained from Saint Paul University, in Ottawa, Canada.
[2] He was appointed auxiliary bishop of the Roman Catholic Archdiocese of Mbarara, on 2 July 2005.
[1] He was appointed to Archbishop of the same archdiocese on 25 April 2020, when Pope Francis accepted the resignation of Paul Kamuza Bakyenga, who had reached the retirement age of 75 years, on 30 June 2019.