Indicating a point of time (or stage of life, etc.) from which something begins or proceeds: from, since. Now only in as of (see as, adv. conj.phrases…
Indicating a starting-point in time, or the beginning of a period. (The date from which one reckons may be either inclusive or exclusive). Also in…
With an adverb in place of a noun-object. (Cf. from, prep. 15) fro ðan ðat: from the time that. froforth: ? = from this time forth. Obsolete.