Piatt Family History
Piatt Surname Meaning
Altered form of French and Walloon Piat: from the personal name Piat from the Latin name Piatus ‘expiated’ (from the past participle of the verb pio ‘to appease; to expiate’). The name was borne by Saint Piatus of Tournai (in Wallonia, Belgium) who was martyred under the Roman Emperor Maximian c. 286
Altered ending of the surname reflects the Canadian and American French practice of sounding the final -t. Compare Pyatt.
English (Lancashire and Cheshire): variant of Pyatt.
Source: Dictionary of American Family Names 2nd edition, 2022
