Demarest Family History
Demarest Surname Meaning
French: regional variant of Demarais a cognate of 2 below. Altered form of French Desmarets: habitational name with fused preposition and definite article des ‘from the’ for someone from any of various places called Les Marets (from a regional derivative of Old French mareis ‘marsh’).
Alternatively the name may simply have been topographic. Compare Demaray Demaree Demorest and Demory
Source: Dictionary of American Family Names 2nd edition, 2022
