Tyas Family History
Tyas Name Meaning
from Anglo-Norman French t(i)eis tiais ‘Teuton German’ denoting someone from Germany or the Low Countries. Some of the early bearers may belong with (2). occasionally from Thiais (Val-de-Marne). Compare Nicholas de Tieys canon of the church of Saint Stephen de Gressibus Paris 1309 in
Source: The Oxford Dictionary of Family Names in Britain and Ireland, 2016