An Amati is a variety of violin, as made by the Amati family between 1538 and 1740.

Andrea Amati, born in 1511

This, I am not sure.

I can tell you that the Amati family and the Stradivarius family lived in the same neighborhood, on the same block, on the same street.

There are a family of Italian violin makers one of whom was names Andrea Amati, who made the famous Amati Violins!

Andrea Amati was born in 1505 in Cremona, Italy and passed away in 1577. He was responsible for developing the initial instruments of the violin family that we're familiar with today.