Etymology in the sources
Source-reportedComposé de la racine Alfons, du suffixe -in- (« genre féminin ») et de la finale -o (substantif).
Sources for this account (2)
- French Wiktionary: AlfonsinoCC-BY-SA-4.0 · retrieved 2026-10-14
- Portuguese Wiktionary: AlfonsinoCC-BY-SA-4.0 · retrieved 2026-10-14

