from time immemorial

from/since time immemorial

(literary)

for longer than anyone can remember Her family had farmed that land from time immemorial.

Name	Pronounced	Usage
Elikapeka	-	Hawaiian
Pablo	PAH-blo	Spanish
Aeneas	[i:'ni:æs]
EfigÊNia	-	Portuguese (Brazilian)
'Avishay	-	Biblical Hebrew
Maurene	maw-REEN, MAWR-een	English (Rare)