Background
He was born in Borre as a son of vicar Søren Sigwardt (1729–1792) and his first wife Ulrikke Leonore, née Weinwich. He took his primary and secondary education under his father as well as teacher in Christiania Herman Amberg.
He was born in Borre as a son of vicar Søren Sigwardt (1729–1792) and his first wife Ulrikke Leonore, née Weinwich. He took his primary and secondary education under his father as well as teacher in Christiania Herman Amberg.
Sigwardt enrolled as a student in 1791, and graduated with the candidate.theol.
Degree in 1795. He became vicar at Oslo Hospital and Christiania Tugthus in 1804, vicar in Tune and dean in the Diocese of Christiania in 1820. From 1825 he was connected to the Court of the Royal Family, and in 1832 he was appointed as Bishop of the Diocese of Christianssand. He caught a disease during a trip to Mandal in 1839, and died in October 1840.
She died in November 1815, and in 1822 Sigwardt married the widow of Nicolai Lumholtz, Karine Lumholtz.