My grandfather was also born in Aidone. I visited there 5 years ago and the church, Santa Maria La Cava, had birth, baptisimal and marraige certificates for him and all of his siblings. He was a Pitta and his mother's maiden name was Scivoli, but his first cousins were Drago's so they most likely were related! I would try to contact the church. They could proabably be of help.