John Casimir, Count of Erbach-Breuberg

John Casimir, Count of Erbach-Breuberg (10 August 1584 – 14 January 1627), was a German Count, member of the House of Erbach and ruler over Breuberg, Wildenstein and Fürstenau.

Born in Erbach, he was the eleventh child and fourth (but third surviving) son of George III, Count of Erbach-Breuberg by his second wife, Countess Anna of Solms-Laubach (11 April 1557 – 8 December 1586), the youngest child and daughter of Frederick Magnus, Count of Solms-Laubach-Sonnenwalde and his wife, Countess Agnes of Wied (d. 1588).^[1] John Casimir never married, nor had any known children.

After the death of their father, John Casimir and his surviving brothers divided the Erbach domains in 1606: he received the districts of Breuberg and Wildenstein. In 1623, after the death of his eldest brother Frederick Magnus without surviving issue, the remaining brothers divided his domains: John Casimir received the district of Fürstenau.

John Casimir died in Schweidnitz aged 41 and was buried in Michelstadt.^[2] Because he never married or had children, his brothers divided his land after his death.