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Dictionary of Medieval Names
from European Sources

Lucy f. Latin lucia 'light'.

The name of a 3rd-4th C martyr who was one of the eight women, along with Mary, commemorated by name in the Canon of the Mass, which contributed to the popularity of the name in the Middle Ages.

While sometimes considered to be a feminine form of Luke, the names are in fact unrelated.

Czech Republic
Latin
1351 Lucie (dat) chlumecky 38; 1353 Lucze (dat) ibid. 96
England
Latin
1381 Lucia (nom) Suffolk1381 p. 98
Middle English
1395 luce EEW p. 6; 1411 lucie ibid. p. 18, lucye ibid. p. 18
English
1530 Lucie LIWill-III p. 33; 1542 Luce DEmar-vol1 p. 78; 1571 Luce BEmar-vol2 p. 2; 1574 Luce StAnthonlin p. 23, bruton-vol1 p. 41; 1575 Luce OrpingtonKe p. 4; 1581 Luce DEmar-vol2 p. 6; 1595 Luce BUmar-vol1 p. 27; 1599 Luce DEmar-vol2 p. 41
France
Latin
1030 Lucia (nom) StVdM-II 682; 1135 Luca (abl) clairvaux-12thc 7, Lucia (nom) ibid. 7; 1147 Luca (nom) ibid. 14, Luce (gen) ibid. 14, Lucia (abl) ibid. 14; 1163 Lucie (gen) ibid. 99; 1260 Lucia (nom) ArrestReg-volI XIV, St. Martin, Lucie (gen) ibid. XIV, St. Martin
Old French
1296 Luce paris1296 p. 12
Germany
Early New High German
1405 Lucein (gen) mairhofer DCLXXIX
Italy
Latin
1514 Lucia (nom) Rossi-StudiStoria p. 274; 1522x1532 Lucia (nom) DSF p. 58, 37; 1527 Lucia (nom) Rome1527 p. 87
Cite as: J. Uckelman, S.L. Uckelman. "Lucy". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Lucy.