Why "Alonso The Wise"

Well, My great grandma who we used to call "Maye" was a magical woman indeed. She looked like a classic fairy tale granny and she was famous for playing the piano and telling stories. But she was also mysterious and unpredictable; She moved with the wind and made list of enemies sometimes. She named me "Alonso el Sabio" as in "Alfonso el Sabio" King of Castile, though I was probably five years old when she was still with us. Once, she hand-wrote me one of the most beautiful letters someone has ever dedicated to me and she signed it in beautiful flourish letters "Maye Dinamita" (Dynamite Maye)