William married on 31 October 1724 in
Hoym with Princess Charlotte Wilhelmine (1704–1766), daughter of Prince
Lebrecht of Anhalt-Bernburg-Schaumburg-Hoym, with whom he had the following children: • Charlotte (1725–1798) : married in 1765 Count Alfred August of
Ysenburg and Büdingen in Waechtersbach (1717–1782) • William (1726–1726) •
Frederick (1727–1777), who succeeded him as Landgrave of Hesse-Philippsthal-Barchfeld : married in 1772 Countess Sophie Henriette of
Salm-Grumbach (1740–1800) • Philip (1728–1745) • Johanna Charlotte (1730–1799) • Caroline (1731–1808) • Ulrika Eleonora (1732–1795) : married in 1755 with Landgrave
William of Hesse-Philippsthal (1726–1810) • Charles William (1734–1764) • Anna (1735–1785) : married in 1767 Count Adolph of Lippe-Detmold (1732–1800), son of
Simon Henry Adolph of Lippe-Detmold • George (1737–1740) • Dorothea Marie (1738–1799) : married in 1764 John Karl Louis, Prince of
Löwenstein-Wertheim-Freudenberg (1740–1816) • Christian (1740–1750) • Louis Frederick (1741–1741) •
Adolph (1743–1803), Landgrave of Hesse-Philippsthal-Barchfeld : married on 1781 to
Princess Louise of Saxe-Meiningen (1752–1805) • August (1745–1745) == Ancestry ==