The name has various derivatives and originates from the Basque area of Galicia. It means son of Martin. Martín, with an accent on the “i” and pronounced [mar 'tin] (mar-teen) is a common given name and is also among the most common surnames in Spain. Its Catalan variant is Martí and in Galician is Martiño. Jewish families in medieval Spain (Sephardic) Jews who remained in Spain and agreed to accept Christianity were asked to change their surnames. One of the names taken up by these Jewish conversos (originally known in Spain as Marranos, but preferred term is 'anusim' which is Hebrew for "forced") was “Martí” (also spelled "Marty"). Sephardic Jews also used Martin or Martinez, as a variation from the Hebrew name Mordecai. I have found various spellings of the name Maartens, Maartensz, Martin, Maertensz and Martinez.