John Seabrook Sydnor: Merchant, Slave Trader, and Mayor of Galveston (1812–1869)
Revised by: Brett J. Derbes
Published: 1952
Updated: November 17, 2021
John Seabrook Sydnor, merchant and slave trader, was born in Hanover County, Virginia, on October 20, 1812. He married Sarah Columbia White of Richmond, Virginia, on December 22, 1830, and the couple had five daughters and two sons. Sydnor came to Texas on an inspection tour in 1838, returned to Virginia for his family in 1839, and in January 1840 arrived at Galveston on the Austin with a house that he had had framed in Virginia and shipped in sections. By 1842 he served on the city board of aldermen and operated a profitable commission and real-estate business, J. S. Sydnor & Company. As mayor of Galveston in 1846–47, he promoted establishment of schools, organization of the police and fire departments, and general public improvement. He promoted development of a city market, chamber of commerce, and railroad construction. Sydnor served in the coast guard, built two steamboats in 1843 to haul cotton, and in 1845 built a brick wharf on which he constructed a storage warehouse. In 1847 Sydnor built a twenty-four room personal residence, Powhatan House, which serves as one of the oldest examples of Doric Greek Revival architecture in Texas. Through the 1850s Sydnor was a slave dealer in Galveston, where he held public auctions at his establishment on Strand Street. For a time he was commissioned a colonel in the Confederate Army but resigned to go into the auction and commission business in Houston. He was sent to Richmond to buy cannons for Texas defense. In 1866 Sydnor moved to New York and went into a brokerage business. He died on September 7, 1869, while on a visit at his son's home at Lynchburg, Texas. He is buried in the Oleander Cemetery in Galveston.
Bibliography:
O. F. Allen, The City of Houston from Wilderness to Wonder (Temple, Texas, 1936). Charles Waldo Hayes, Galveston: History of the Island and the City (2 vols., Austin: Jenkins Garrett, 1974). W. D. Richardson, Galveston Directory for 1859-60: with a Brief History of the Island, Prior to the Foundation of the City (Galveston: News Book and Job Office, 1859). Vertical Files, Dolph Briscoe Center for American History, University of Texas at Austin.
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The following, adapted from the Chicago Manual of Style, 15th edition, is the preferred citation for this entry.
Revised by Brett J. Derbes, “Sydnor, John Seabrook,” Handbook of Texas Online, accessed March 09, 2026, https://www.tshaonline.org/handbook/entries/sydnor-john-seabrook.
Published by the Texas State Historical Association.
TID:
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- 1952
- November 17, 2021
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