On November 6,1779, eighteen-year-old Dorothea became the third wife of the 37-year-old Peter von Biron, Duke of Courland and Semigallia; and the couple had six children, two of whom died in infancy.
On November 6,1779, eighteen-year-old Dorothea became the third wife of the 37-year-old, childless Duke Peter von Biron, son of the famous Ernst Johann von Biron. The couple had six children, two of whom died in infancy.