| Type: | Bishop |
| Honorific Prefix: | The Right Reverend |
| Henry Ustick Onderdonk | |
| Honorific Suffix: | D.D. |
| Bishop of Pennsylvania | |
| Church: | Episcopal Church |
| Diocese: | Pennsylvania |
| Elected: | July 17, 1836 |
| Term: | 1836–1844 |
| Retired: | --> |
| Predecessor: | William White |
| Successor: | Alonzo Potter |
| Ordination: | April 11, 1816 |
| Ordained By: | John Henry Hobart |
| Consecration: | October 25, 1827 |
| Consecrated By: | William White |
| Birth Date: | 16 March 1789 |
| Birth Place: | New York City, New York, United States |
| Death Place: | Philadelphia, Pennsylvania, United States |
| Buried: | Church of St. James the Less |
| Parents: | John Onderdonk & Deborah Ustick |
| Spouse: | Elizabeth Carter |
| Children: | 8 |
| Previous Post: | Assistant Bishop of Pennsylvania (1827-1836) |
| Alma Mater: | Columbia University University of Edinburgh |
Henry Ustick Onderdonk (March 16, 1789 – December 6, 1858) was the second Episcopal bishop of Pennsylvania.
Onderdonk was born in New York City.[1] He studied at Columbia University, receiving his degree in 1805, and then traveled to Britain for further education, receiving his medical degree from the University of Edinburgh.[1] On returning to the United States, Onderdonk practiced medicine in New York before being ordained to the deaconate and priesthood by Bishop John Henry Hobart.[1] In 1816, he went to western New York as a missionary and then returned east to become rector of St. Ann's Church in Brooklyn, remaining there for seven years.[1]
Onderdonk was elected assistant bishop of Pennsylvania in 1827, serving initially as assistant to Bishop William White.[2] He was the 21st bishop of the ECUSA, and was consecrated by bishops William White, Alexander Viets Griswold, and James Kemp. However, bishop Kemp died of injuries received in a stage coach accident while returning from the consecration, so Onderdonk substituted in the Episcopal Diocese of Maryland until a successor was elected.[3] In 1830, Onderdonk published Episcopacy Tested In Scripture, first published in the Protestant Episcopalian and then as tract by the Protestant Episcopal Tract Society, a defense of episcopacy based "on an appeal to the bible alone."[4]
On Bishop White's death in 1836, Onderdonk succeeded him as bishop.[2] Onderdonk was a strong advocate of the pre-Tractarian High Church position, in company with his brother Benjamin Treadwell Onderdonk, who was also a bishop. When Rev. Alexander Crummell petitioned to be allowed to move to Pennsylvania to establish another church (besides the peripatetic St. Thomas congregation) to serve Philadelphia's African-American community, Bishop Onderdonk reportedly replied, "I will receive you into this diocese on one condition: No negro priest can sit in my church convention and no negro church must ask for representation there." Crummell reportedly paused for a moment before declining.[5]
In 1844, Onderdonk was suspended from the exercise of his Episcopal office after rumors of alcoholism.[2] The suspension was lifted in 1856, two years before his death.[2]
He is buried in the churchyard of Church of St. James the Less in Philadelphia.