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Dictionary of Medieval Names
from European Sources

Alvaro m. Proto-Germanic *allaz 'all, whole, every' + Old High German wart 'guard, ward'.

Spain
Catalan
1510 Alvaro valencia1510 3588
Spanish
1334 Aluar deMoxo; 1336 Aluar ibid.; 1567 Albaro SanzSerrano, Alvaro ibid.
Cite as: S.L. Uckelman. "Alvaro". In S.L. Uckelman, ed. The Dictionary of Medieval Names from European Sources, Edition 2015, no. 2. http://dmnes.org/2015/2/name/Alvaro.