|Noah Webster's Dictionary|
(adv.) of this; concerning this; from this; hence.
Int. Standard Bible Encyclopedia
her-ov', Greek haute, "this" (Matthew 9:26); houtos, "this" (Hebrews 5:3, the Revised Version (British and American) "thereof").
Hereof (2 Occurrences)
Matthew 9:26 And the fame hereof went abroad into all that land. (KJV ASV)
Hebrews 5:3 And by reason hereof he ought, as for the people, so also for himself, to offer for sins. (KJV ASV)