Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
HASSETT
As described in historical dictionaries
Patronymica Britannica (1860)
HASSETT. A common name in co. Kerr}"-. It is believed to be a contraction of the surname Blenerhassett, just as Shaulcs is of Cruikshauks, Cott of Cottingham, and Mull of j\Ioliueux.
Surname type: Diminutive
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English