Several generations of men in my family were named Alonso pronounced with the 'so' ending not 'zo'. We are Americans (since the late 17th Century) but our ancestry is English and Scottish, so we don't know where the name came from originally. Without exception the Alonso men chose to go by Lon, Lonny or their middle names. I actually like Alonso but it stopped being used during my grandfather's generation.
― Anonymous User 9/16/2018
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Typically is considered a fresher way to use Alfonso, as Alfonso comes off as middle-age or grandparent-like, much like in Spanish, Araceli, Teofila, Osvaldo, Gonzalo or in English like Susan, Gertrude, Wallace or Bernard. Overall, I like the name Alonso, sounds fresh and underused here in the States (Though I don’t know if it is overused in Mexico or the Hispanic and Latino world and communities, I know Renata is currently overused there). Too bad though, I have a cousin with that name.