I do not know the Andreini family but have been in the area of Arezzo and Foiano (where my wife's GGF came from about 5 miles south of Frasinetto). The registry office in Arezzo should be able to provide basic info as should the office in the Commune of Frasinetto. If you know the particular church the family attended you can go there. It is generally helpful to write to the offices before hand mentioning your interest and giving what info you have and what you are seeking. You should also check the military records in Arezzo since your father may have served in the Italian army (as did most everyone).Good luck. JK