Family name origins & meanings
- Ukrainian, Belorussian, and Polish : ethnic name from eastern Slavic Lach ‘Pole’. This term is used in Czech to denote the inhabitants of the northeastern part of Moravia, near the Polish border.
- Slovak, Czech (Moravian), and German (of Slavic origin) : from the personal name Lach, a short form of Czech and Slovak (V)ladislav (see Laszlo).
- Germanized spelling of Slovenian Lah, derivative of Vlah ‘Wallachian’, ‘Vlach’, ‘Romanian’, or more generally denoting any person of foreign origin.