c.1290, from O.E.
þanone, þanon "from that place" + adverbial genitive
-es. O.E.
þanone, þanon is from W.Gmc.
*thanana (cf. O.S.
thanana, O.N.
þana, O.Fris.
thana, O.H.G.
danana, Ger.
von dannen), related obscurely to the root of
then, and ult. from PIE demonstrative base
*to- (see
the). Written with
-c- to indicate a voiceless "s" sound.
From thence is redundant.
Thenceforth is c.1374;
thenceforward attested from 1457.