Puyat is the third child of Philippine Pioneer Industrialist Gonzalo Puyat and Nicasia Juco, both from
Guagua,
Pampanga. He was trained early in life by his father, Don Gonzalo, in the trade of manufacturing billiard tables and bowling alleys. Eventually, he assisted in managing the family business of Gonzalo Puyat & Sons, the brand holder of AMF-Puyat, Puyat Steel, and Puyat Vinyl. Puyat was married to Eugenia Guidote, an accountant and pioneer member of the
Philippine Institute of Certified Public Accountants (PICPA), and a trained opera singer (soprano). They had seven children – Gil Jr. (deceased), Vicente (deceased), Antonio (deceased), Victor, Jesusa (deceased), Alfonso and Eugenia. ==Death==