1733-1783.
Surveyor in Västerbotten province.
Sveriges sjökartor – A. Hedin.
Ansedd geograf och kartograf som införde litografikonsten i England.
1756-1820.
King Gustav III's flag captain in a battle at Svensksund. Appointed state secretary for maritime affairs, later adjutant-general for the fleets. Fell out of favour and was demoted in 1801. When commandant of Sveaborg fortress in Helsinki in 1808, he ignominiously capitulated to the Russians.
Sveriges sjökartor – A. Hedin.
Amiral Häggs flaggkarta. - Stockholm 1888.