Background
He was born as the son of Jozef van Montmorency, Count of Nevele and Anna van Egmont the Elder, and was the younger brother of Philip de Montmorency, Count of Horn.
He was born as the son of Jozef van Montmorency, Count of Nevele and Anna van Egmont the Elder, and was the younger brother of Philip de Montmorency, Count of Horn.
Floris had a military training at the court of his relative Anne de Montmorency, Constable of France. He accompanied Emperor Charles V to Spain after his abdication. He was also appointed as Governor of the Tournaisis.
In April 1566, he was sent by the Council of State with John IV of Glymes to Spain in a last attempt to avoid war.
As Glymes was wounded on the leg before leaving, Floris travelled alone. When the Beeldenstorm raged across the Low Countries, Floris was arrested and kept in house arrest in the castle at Simancas.
When Egmont en Horn were arrested in Brussels, Floris was also condemned to death by the Council of Troubles.
