Stilley Family History
Stilley Surname Meaning
English (Cumberland) and Scottish: perhaps a variant of Tillie (see Tilley) with a prosthetic S- though the evidence for this is very slight.
In some cases the name may also be a variant of Steely.
Altered form of German Stille (see Still) written thus to preserve the second syllable of the German pronunciation.
Swiss German: habitational name from a place called Stilli in Aargau.
Source: Dictionary of American Family Names 2nd edition, 2022
