Adolf Fredrik of Sweden

Adolf (or Adolph) Frederick (Swedish: Adolf Fredrik; German: Adolf Friedrich; 14 May 1710 – 12 February 1771) was King of Sweden from 1751 until his death in 1771. He was the son of Christian August of Holstein-Gottorp, Prince of Eutin, and Albertina Frederica of Baden-Durlach. He was an uncle of Catherine the Great and husband to Louisa Ulrika of Prussia.

After 220 years, the House of Oldenburg returned to the Swedish throne with Adolf Frederick through its Holstein-Gottorp branch. He was a weak monarch, installed as first in line to the throne following the parliamentary government's failure to reconquer the Baltic provinces in 1741–1743. Aside from a few attempts, supported by pro-absolutist factions among the nobility, to reclaim the absolute monarchy held by previous monarchs, he remained a mere constitutional figurehead until his death.