[7][23]
The Harrisons had ten children:

Elizabeth Bassett (1796–1846)
John Cleves Symmes (1798–1830), who married the only surviving daughter of Zebulon Pike
Lucy Singleton (1800–1826)
William Henry Jr. (1802–1838)
John Scott (1804–1878), father of future U.S. president Benjamin Harrison[24]
Benjamin (1806–1840)
Mary Symmes (1809–1842)
Carter Bassett (1811–1839)
Anna Tuthill (1813–1865)
James Findlay (1814–1817)[25]
Professor Kenneth R. Janken, in his biography of Walter Francis White, claims that Harrison had six children by an enslaved African-American woman named Dilsia. The assertion is based upon the White family's oral history but is not otherwise documented.[26]

Political career
Harrison began his political career when he temporarily resigned from the military on June 1, 1798, and campaigned among his friends and family for a post in the Northwest Territorial government.[12] His close friend Timothy Pickering was serving as Secretary of State, and along with Judge Symmes’ influence, he was recommended to replace Winthrop Sargent, the outgoing territorial secretary.[5] President John Adams appointed Harrison to the position in July 1798.[12] The work of recording the activities of the territory was tedious, and he soon became bored, and sought a position in the U. S. Congress.