Part of speech: Adverb
from that place or from there
Example: proceeded thence directly to college; flew to Helsinki and thence to Moscow; roads that lead therefrom
Part of speech: Adverb
from that circumstance or source
Example: atomic formulas and all compounds thence constructible"- W.V.Quine; a natural conclusion follows thence; public interest and a policy deriving therefrom; typhus fever results therefrom
So, Hence, Thereof, Therefrom, Therefore
The word "thence" comes from Old English þanon.
Old English was a fully Germanic language before the Norman Conquest transformed it.