Refurbished church in old Sonnino

This is the church right across from the Castle in old Sonnino. It was recently refurbished and looks great. I was told it was built in the 12th century. Anybody know the name? As we were leaving the church my cousin Graziano pointed to the man in the picture who takes care of the church and said "that's another one of your relatives. I seem to meet new relatives each time I visit!