Jakob Sigismund von Reinach-Steinbrunn (1683–1743) was the Prince-Bishop of Basel from 1737 to 1743.[1]
Jakob Sigismund von Reinach-Steinbrunn was born in Obersteinbrunn, the son of Johann Jakob Kaspar Sigmund Freiherr von Reinach-Steinbrunn (d. 1693) and his wife Maria Salome Lucia von Pfirt (d. 1721).[2]
From 1703 to 1705, he attended the Jesuit gymnasium in Porrentruy. He then studied Christian theology at the Collegium Germanicum in Rome.
He became a canon in 1707, and was ordained as a priest on 18 September 1717.[3] He became the provost of Basel Münster in 1726.
On 4 June 1737 the cathedral chapter of Basel Münster elected him to be the new prince-bishop of Basel, with Pope Clement XII confirming his appointment on 30 September 1737. He was consecrated as a bishop by Cardinal Barni on 29 June 1738.
He died on 16 December, 1743.