The naval Battle Hostile_encounter of Les Formigues ( Catalan ) took place Process_start probably in the early morning of 4 September 1285 near Les Formigues Islands , Catalonia , about 85 km northeast of Barcelona , when a Catalan-Sicilian galley fleet commanded Control by Roger of Lauria defeated Conquering a French and Genoese galley fleet commanded Control by Guilhem de Lodeva , Henry di Mari , and John de Orrea .

The naval Battle Hostile_encounter of Les Formigues ( Catalan ) took place Process_start probably in the early morning of 4 September 1285 near Les Formigues Islands , Catalonia , about 85 km northeast of Barcelona , when a Catalan-Sicilian galley fleet commanded Control by Roger of Lauria defeated Conquering a French and Genoese galley fleet commanded Control by Guilhem de Lodeva , Henry di Mari , and John de Orrea .

The `` Gesta '' places Placing the battle Hostile_encounter at Les Formigues ( or Fomigas ) , while Muntaner favoured Choosing a location off Roses to the north .