Family name origins & meanings
- Norwegian : habitational name from any of numerous farmsteads especially in Østlandet, named Kolstad, from the Old Norse personal name Kolr meaning ‘coal’, ‘black’ or Kollr meaning ‘round skull’, ‘bald head’ + staðr ‘farmstead’, ‘dwelling’.
- Altered spelling of German Kohlstädt, a habitational name from a place so named near Paderborn in Westphalia.