He visited his uncle Albert I of Straubing-Holland in Quesnoy and participated in the siege of Bourbourg.
On 1 November he went for an annual pension of 4000 francs in Paris in the service of King Charles VI, whose marriage to his niece Elizabeth he ran significantly.
In the summer of 1385 he accompanied Elizabeth - later named Isabeau de Bavaria - to Amiens for her marriage with the King.
In 1387 Frederick imprisoned the archbishop of Salzburg to force him to finish his alliance with a confederation of cities in Swabia.
In this marriage he had only a daughter, Elisabeth (Isabella) (1361 – 17 January 1382), married to Marco Visconti, Lord of Parma.