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Dictionary of Medieval Names
from European Sources

Pleasant f. Latin placens, placentia 'pleasing, satisfying, giving pleasure'.

England
Latin
1559 Plesans (nom) StMartF p. 59
France
Latin
1179 Placentia (abl) clairvaux-12thc 181; 1274 Placentia (nom) RegToul-13thC p. 45, Placentiam (acc) ibid. p. 45
Middle French
1421 Plaisante favier 256; 1571 Plaisance RegPCC-1
Cite as: S.L. Uckelman. "Pleasant". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2018, no. 1. http://dmnes.org/2018/1/name/Pleasant.