About the Castello surname
The surname Castello has a primarily toponymic formation. The surname form is characteristic of Italian naming traditions; the suffix may have patronymic, diminutive, or regional value. This formation belongs to the broad group of surnames connected with a place or geographic feature. Families bearing the same surname may nevertheless come from different places when more than one locality produced a similar name.
Pronunciation:
Kas-tè-lo/kastɛlo/