Family name origins & meanings
- Altered spelling of the French family name Demarcq, a habitational name, with the preposition de, for someone from a place named Marcq, of which there are examples in Ardennes, Nord, and Yvelines.
- Northern French : habitational name, with the preposition de, from Marke in West Flanders, Marck in Pas de Calais, or any of the places in France and Belgium named with the Germanic element marca ‘boundary’, ‘frontier’.