David Gerard O’Connell was an auxiliary bishop of the Archdiocese of Los Angeles in California, United States and a Knight of Peter Claver. It was Timothy Manning of Los Angeles, California who ordained O’Connell a deacon.

O’Connell completed his studies for the priesthood at All Hallows College in Dublin, Ireland. Here are 13 more things about him:

1. He was born in Glanmire, County Cork, Ireland to David O’Connell and Joan O’Connell.
2. In 1975, he graduated from the University College Dublin in Dublin with a bachelor’s degree in philosophy and English literature.
3. In 1977, he graduated from Maynooth College in Maynooth, Ireland with a bachelor’s degree in divinity.
4. On July 10, 1979, John Scanlon ordained him a priest for the Archdiocese of Los Angeles. From 1979 to 1983, he served as associate pastor at St. Raymond in Downey, California.
5. From 1983 to 1984, he served as associate pastor at St. Maria Goretti in Long Beach, California.
6. From 1984 to 1988, he served as associate pastor at St. Hillary in Pico Rivera, California.
7. In 1987, he graduated from Mount St. Mary’s College in Los Angeles with a master’s degree in spirituality.
8. From 1988 to 2003, he served as pastor at St. Frances Xavier Cabrini and Ascension Parish in Los Angeles.
9. From 2003 to 2015, he served as pastor at St. Michael in Los Angeles. From 2004 to 2006, he served as pastor at Ascension Catholic, St. Eugene in Los Angeles.
10. On July 21, 2015, Pope Francis appointed him titular bishop of Cell Ausaille and an auxiliary bishop of the Archdiocese of Los Angeles.
11. On September 8, 2015, he was consecrated by Archbishop José Gómez. He was named Gomez’s episcopal vicar for the San Gabriel Pastoral Region, a pastoral region of the Archdiocese of Los Angeles in the Roman Catholic Church.
12. In September 2022, he was honored with the Evangelii Gaudium Award from St. John’s Seminary in Camarillo, California.  
13. On February 18, 2023, he was fatally shot at his home in Hacienda Heights, California allegedly by his housekeeper’s husband Carlos Medina, then 65. He was 69.