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Dictionary of Medieval Names
from European Sources

Lanswith f. Old High German lant, Old Saxon land 'land' + Old Saxon swīth, Gothic swinþs from Proto-Germanic *swinþaz 'strong'.

Germany
Latin
963x1023 Lansuit (nom) TradCorb §228
Cite as: S.L. Uckelman. "Lanswith". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2019, no. 1. http://dmnes.org/2019/1/name/Lanswith.