I would like to know how far have you studied your Alfonso family. There are a group of Alfonso in the Hatillo area, whom I was able to trace bach to ABT 1750. I think I found a link among them and the Alfonso Feo and Alfonso Gorrin families, probably one of the most distinguished families in San Miguel de Abona, Tenerife.
I imagine your Feo surname could be from Tenerife also. There was a Rodriguez Feo in UtuadoABT 1880, linked to some of my family.