WHENCE
formal —interrog. Adv. From what place? —conj. 1 to the place from which (return whence you came). 2 (often prec. By place etc.) From which. 3 and thence (whence it follows that). [old english: related to *when] usage the use of from whence rather than simply whence (as in the place from whence they came), though common, is generally considered incorrect.