D defs.my
Entry 2 senses Webster, 1913

Whence

/hwĕns/ · IPA /ʍɛns/
01 adv. From what place; hence, from what or which source, origin, antecedent, premise, or the like; how; -- used interrogatively.
  1. 1.
    From what place; hence, from what or which source, origin, antecedent, premise, or the like; how; -- used interrogatively.
    Whence hath this man this wisdom?” — Matt. xiii. 54.
    Whence and what art thou?” Milton.
  2. 2.
    From what or which place, source, material, cause, etc.; the place, source, etc., from which; -- used relatively.
    “Grateful to acknowledge whence his good Descends.” Milton.
    “O, how unlike the place from whence they fell?” Milton.
    From whence come wars and fightings among you?” — James iv. 1.