{{Infobox military person | honorific_prefix = | name = Isaac Hayne | honorific_suffix = | native_name = | native_name_lang = | image = | image_size = | alt = | caption = | birth_date = {{Birth date|1745|09|23}} | death_date = {{Death date and age|1781|08|04|1745|09|23}} | birth_place = Colony of South Carolina | death_place = Charleston, South Carolina | death_cause= Execution by hanging | nickname = | birth_name = | allegiance = {{flag|United States|23px}} | branch = {{flagicon image|Gadsden flag.svg}} Continental Army | service_years = | rank = Colonel | service_number = <!--Do not use data from primary sources such as service records.--> | unit = | commands = | battles = American Revolutionary War | battles_label = | awards = | spouse = <!-- Add spouse if reliably sourced --> | relations = | other_work = | signature = | website = <!-- {{URL|example.com}} --> }} '''Isaac Hayne''' Jr. (23 September 1745 – 4 August 1781) was a wealthy resident of South Carolina at the time of the American Revolutionary War. He joined the rebellion and served militarily until his surrender at the 1780 siege of Charleston. Along with other officers, Hayne was paroled on a promise not to serve against the Crown until exchanged. In 1781, amid increasing conflict, Hayne swore an explicit oath of allegiance to the Crown to avoid confinement. A few months later, he rejoined the rebellion and led a raid on loyal forces, but was captured. A Court of Inquiry determined Hayne had broken his oath of allegiance. As such, he was court-martialed and executed by the British for treason.

==Biography== Hayne was the son of Isaac Hayne Sr and Sarah Williamson and grandson of John Hayne, immigrant from Shropshire, England to South Carolina. He inherited a 900-acre plantation and 23 slaves from his father. He would increase his holdings throughout his life. At the time of his death, Hayne also owned Sycamore plantation with its 650 acres, the 700-acre Pear Hill plantation, five lots in Beaufort, two lots in Charleston and one-half interest in an iron works in York District. Overall, Hayne owned 6,500 acres scattered in South Carolina, and 1000 acres on the Turtle River in Georgia.<ref>{{Cite web |title=John-Cantzon-Foster - User Trees - Genealogy.com |url=https://www.genealogy.com/ftm/f/o/s/John-Cantzon-Foster/WEBSITE-0001/UHP-0033.html |access-date=2023-07-18 |website=www.genealogy.com}}</ref>{{Self-published inline|reason=family geneology|date=September 2025}} By then he also owned approximately 130 to 150 enslaved people. The total number of human beings that he had owned during his life isn't known.

At the beginning of the War of Independence, Hayne joined the rebellion, and was a commissioned captain of artillery, and at the same time state senator. In 1780, on the invasion of the state by the British, he served in a cavalry regiment during the final siege of Charleston, and, being included in the capitulation of that place, was on parole not serve against the British until exchanged.{{sfn|Wilson|Fiske|1900}}{{failed verification|date=October 2025}}<ref>some sources claim variations on this</ref>

In 1781, as the fortunes of the British began to decline, he, with all the others who were paroled on the same terms, was required to join the defense or be subjected to close confinement.{{explain|date=December 2025}}Hayne didn't want to be imprisoned because his wife and several of his children were ill with smallpox. So he went to Charleston, and swore an oath of allegiance.<ref>Haynes later said “that he wd. submit to their government, & take the oath, but, must openly declare, that he shd. consider it as obligatory, only as long as their Protection wd. really be of Benefit to him, or, till the Americans wd. again get possession of the Country.”</ref><ref>others say Hayne was assured by the deputy British commandant, Patterson, that he would not be required to bear arms against his former compatriots.</ref>

After the successes of General Greene had left the British nothing but Charleston, Hayne was summoned to join the royal army immediately. This being in violation of the agreement that had been made, he considered that this released him from all his obligations to the British. He went to the American camp, and was commissioned colonel of a militia company.{{sfn|Wilson|Fiske|1900}}{{failed verification|date=October 2025}}

Hayne then commanded an American rebel raid which captured Brigadier-General Andrew Williamson, an American Loyalist. Colonel Nisbet Balfour, the British commander in Charleston during the 1781 siege of Charlestown, sent a column to intercept the raiding party. The interception was successful. There was a skirmish resulting in the defeat of the raiding party, the release of Williamson and the capture of Hayne.{{sfn|Moore|1860|pages=447–448}}{{failed verification|date=October 2025}}

A court of inquiry was convened to determine Hayne's status. It confirmed he had broken his earlier parole not to take up arms against the Crown.<ref name=Bowden>[http://oldexchange.org/history/#1781 1781 Isaac Hayne] {{Webarchive|url=https://web.archive.org/web/20110724024559/http://oldexchange.org/history/#1781 |date=2011-07-24 }}, website of the [http://oldexchange.org Old Exchange Building and Provost Dungeon] cites Bowden, David K. The Execution of Isaac Hayne. Lexington, South Carolina: The Sandlapper Store, 1977</ref> He was executed in Charleston on August 4, 1781. He was buried on the family property in Jacksonboro.<ref>{{Cite web |title=Hayne, Isaac |url=https://www.scencyclopedia.org/sce/entries/hayne-isaac/ |access-date=2023-07-18 |website=South Carolina Encyclopedia |language=en-US}}</ref>

Hayne married Elizabeth Hutson, daughter of Rev. William Hutson and Mary Woodward. They were the parents of six children.

==Further reading==

*{{cite book |last1=Bowden |first1=David K. |title=The Execution of Isaac Hayne |date=1977 |publisher=Sandlapper Publishing |location=Orangeburg, South Carolina |isbn=9780878440375|oclc=641617543}} *{{cite book |last1=Bragg |first1=C. L. |title=Martyr of the American Revolution: The Execution of Isaac Hayne, South Carolinian |date=2017 |publisher=University of South Carolina Press |location=Columbia, South Carolina |isbn=9781611177190|oclc=1052506593}}

==Notes== {{Reflist}}

== References == {{Portal|Biography}} * {{cite book|first=Frank |last=Moore |year=1860 |title=Diary of the American Revolution: From newspapers and original documents |volume=2 |publisher=C. Scribner |pages= [https://archive.org/details/diaryamericanre04moorgoog/page/n458 447]–448}} Newspaper article about the capture of Williamson and Hayne from the ''Rivington's Gazette'', August 1, 1881: "July 1.—Last Thursday night a small party of mounted rebel militia ..."

'''Attribution''' * {{Appletons'|wstitle=Hayne, Isaac|year=1900}}

{{Authority control}}

{{DEFAULTSORT:Hayne, Isaac}} Category:1745 births Category:1781 deaths Category:18th-century executions of American people Category:18th-century owners of plantations in the Thirteen Colonies Category:American Revolutionary War executions Category:Executed military personnel Category:Executed people from South Carolina Category:Continental Army personnel who were court-martialed Category:South Carolina militiamen in the American Revolution Category:People executed by the British military by hanging Category:People executed by the Kingdom of Great Britain Category:People executed for treason against the United Kingdom Category:United States military personnel killed in the American Revolutionary War Category:Owners of plantations in colonial South Carolina Category:Slave owners from South Carolina