sentences:  Ehrensvärd had tasked first Captain O. R. Clansenstierna and later (1751-1757) Lieutenant-Colonel Fabian Casimir Wrede with the construction efforts at Degerby and Svartholm who had in 1751 around 2 000 workers at their disposal.While the plans for the fortifications around the town had to be cut short it did not hinder the construction of Svartholm.King Adolf Frederick visited the site in 1751 which was renamed from Degerby to Lovisa () after his wife Louisa Ulrika during his reign.