Dictionary of Medieval Names
from European Sources

Alexis m. Ancient Greek Ἄλεξις or Ἀλέξιος 'defender'.

The name of a 4th-5th C Roman saint, a 10th-11th C Byzantine emperor, a 12th C Byzantine emperor, a 12th-13th C Byzantine emperor, two 13th C Byzantine emperors, a 13th C emperor of Trebizond, two 14th C emperors of Trebizond, a 14th C Russian saint, and a 15th C emperor of Trebizond.

Finland
Early Modern Swedish
1582 Elessi (nom) Audén1980 p. 171
France
Middle French
1562 Alexis RegPCC-1 p. 15; 1565 Allexis ibid. p. 195
Italy
Latin
1527 Alessij (gen) Rome1527 p. 88
Italian
1513x1521 Alexio LeoX p. 12
Latvia
Latin
1295 Alexi (nom) RigSB 59; 1296 Alexi (nom) ibid. 66
Cite as: R. Le Get, S.L. Uckelman. "Alexis". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2016, no. 4. http://dmnes.org/2016/4/name/Alexis.