On the Spanish family Guillami of 2 or 3 generations my C.Stainer book (over 100 years old dated 1/11/95 on the back) was a reference;
"GUILLAMI, Spanish family of Violin-makers, about 1680-1780." This reference by date includes J.B. , the eldest listed maker also listed by Henley.
Just now I found a link on line listing
Italian makers and found the exact same quote, obviously copied from C.Stainer
.