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.
[2] He then studied Christian theology at the Collegium Germanicum in Rome.
[2] 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.
[3] He was consecrated as a bishop by Cardinal Barni on 29 June 1738.