Idelfonsa it's my nickname.
Because my family owned a big and old house called "San Ildefonso" that is so near to my heart, that I decided to choose as my nickname: Ildefonsa.
But, when I did it, I was then working as a member of a multimedia team, and the programmer wrotte wrongly my beloved nickname: Idelfonsa. An odd name in spanish. The one that has made me present in Internet 6 years ago.
So Idelfonsa I am!