Floris had a military training at the court of his relative Anne de Montmorency, Constable of France.
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As the rest of the high nobility in Flanders, Floris was a strong opponent to Cardinal Granvelle.
Montmorency | Montmorency, Val-d'Oise | Anne de Montmorency | Montmorency-Beaufort | House of Montmorency | François de Montmorency, ''comte de Bouteville | Thomas de Montmorency Murray-Prior | Philip de Montmorency, Count of Horn | Montmorency (Montreal Metro) | Floris V, Count of Holland | Floris of London | Floris Nollet | Floris Jespers |