[2] In 1968, Guillory earned a Bachelor of Arts degree from the Divine Word College at Epworth, Iowa, in 1968.
[1] On December 16, 1972, Guillory was ordained to the priesthood for the Society of Divine Work at his home parish of St. Ann in Mallet Bayou by Auxiliary Bishop Carlos Ambrosio Lewis Tullock from the Archdiocese of Panamá.
Guillory was the founding director of the Tolton House of Studies in New Orleans, the seminary residence for Divine Word students.
[1] In 1986, Guillory earned a Master of Christian Spirituality degree from Creighton University in Omaha, Nebraska.
For his episcopal motto, Guillory chose Romans 8:28: "For those who love God, all things work together for good.
Guillory also served on the national committee on Hispanic Affairs and Priestly Life and Ministry, and the boards of Sacred Heart Seminary and Xavier University in New Orleans.
[1][2] In 2016, Guillory received the Rabbi Samuel Rosinger Humanitarian Award, presented by Temple Emanuel in Beaumont, Texas.
[1] Pope Francis accepted Guillory's resignation on June 9, 2020. and named Reverend David Toups as his successor.