It is now roughly ten years since the demise of
Lorenzo Pimentel, the 'father' implicit in the business name
Pimentel & Sons.

Eleven surviving children were named in Pimentel Senior's obituary.

Three of his sons --
Rick, Robert, and Victor Pimentel --
are identified at the Pimentel Guitars website.

Their brother Agustín passed away in 2014.

Hector Pimentel has his own webpages
where his father is name-checked
and as little as possible is said about his brothers.