He served as the Governor-General of Swedish Pomerania from 1792 to 1796. With his coal mine he started the company that would eventually become Höganäs Bachelor of Arts. He was born on October 24, 1746 to Gustaf Ruuth of Finland (1697–1757) and Baroness Ebba Christina Siöbladh. She was the daughter of Baron Carl Georg Siöblad, Lord of Marsvinsholm and Countess Beata Elisabeth Stenbock.
From 1782 to 1786 he made extensive renovations at Marsvinsholm Castle.
In 1786 he invited a Swiss cheesemaker to Marsvinsholm Castle. A few years later, Swiss style cheese were being produced in Sweden.
He served as the Governor-General of Swedish Pomerania from 1792 to 1796. He was made a Swedish count in 1792.
He died on May 25, 1820.