Mats de Tonsberg

Mats de Tonsberg or Mathias de Tonsberg (1638–1705) was a Norwegian civil servant and timber trader.

He was born in Tønsberg in Jarlsberg og Larvik county in Norway to civil servant Anders Madssøn (1609-1670) and Karen Stranger (1617-1698). He was a brother-in-law of Christian Stockfleth, and uncle of Karen Toller.

Career In 1679 he was appointed as County Governor of Buskeruds amt, residing in the town of Drammen. He served there until 1694 when he was appointed as the Diocesan Governor of Christianssand stiftamt and simultaneously the County Governor of Nedenes og Bamble amt. He held both posts until 1700 when he was dismissed from his job due to his health. In 1704, he was appointed to be the Diocesan Governor of Bergenhus stiftamt and simultaneously the County Governor of Bergenhus amt. He only held this post for a few months before his health failed and forced him to resign in December of 1704.

Besides his public services, he was running a timber trading business. From his base in Drammen, he ran exports of lumber and collaboration with the city's leading merchants and ship owners.