William David O'Brien
His Excellency, The Most Reverend William David O'Brien | |
|---|---|
| Titular Archbishop of Calynda Auxiliary Bishop of Chicago | |
| See | Chicago |
| Installed | April 25, 1934 |
| Term ended | February 19, 1962 |
| Orders | |
| Ordination | July 11, 1903 by James Edward Quigley |
| Consecration | April 25, 1934 by George Mundelein |
| Personal details | |
| Born | August 3, 1878 |
| Died | February 19, 1962 (aged 83) |
| Denomination | Roman Catholic Church |
| Education | St. Vincent's College Kenrick Seminary |
| Motto | Magnificat Dominum (Magnificent Lord) |
William David O'Brien (August 3, 1878 – February 19, 1962) was an American prelate of the Roman Catholic Church in the United States. He served as an auxiliary bishop of the Archdiocese of Chicago in Illinois from 1934 until his death in 1962, and was named an archbishop in 1953.