The House of Gottorp was a noble family that originated in the 12th century in what is now northern Germany. It became prominent in the region of Schleswig-Holstein and played a significant role in the politics of northern Europe. The family is known for its connections to various royal houses and its influence in the Duchy of Schleswig. The most notable member of the House of Gottorp was Frederick IV, who served as Duke of Schleswig and Holstein in the 17th century. The family also had ties to the Russian Empire through marriage, which further expanded their influence. The house eventually became extinct in the male line in the 18th century.