Whence - English editing.

Strictly speaking, whence means ‘from what place’, as in whence did you come? Thus, some people maintain that ‘from’ in from thence as in from whence did you come? Is unnecessary, since the word already contains the idea of ‘from’, so that effectively you are saying ‘from from where’. The use with from is very common, though, and has been used by reputable writers since the 14th century. It is now broadly accepted in Standard English.
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