From: Brian M. Scott
Message: 31868
Date: 2004-04-12
> Sanctus Jacobus had in latin a dialectal variant, SanctusI have always found the derivation of <Diego> from <Didacus>
> *Jacomus, so we have Giacomo in Italian. In the East of
> the Iberic Penninsula we find Jacme. The "c" became a
> vowel in Aragon dialect Jaime and Catalan Jaume. In the
> West of Iberic Penninsula the *Jacomu> Yago or Yagüe. Then
> the fame of Santiago de Compostela was extended all along
> the Penninsula and the names Yago and Yagüe became rare.
> We can find also Diego, from a false word ending of
> Sant-Yago>San-Tiago.