Etymology
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proxy (n.)

early 15c., procusie, proccy, prokecye, "agency of one who acts instead of another, office or authority of a substitute; letter of power of attorney," contraction of Anglo-French procuracie (c. 1300), from Medieval Latin procuratia "administration," from Latin procuratio "a caring for, management," from procurare "manage" (see procure). Also compare proctor (n.).

Meaning "person who is deputed to represent or act for another" is from 1610s. Of things, "that which takes the place of something else," 1630s. Meaning "vote sent by a deputy" is from 1650s in a Rhode Island context. Proxy war, one started or stoked by, but not directly involving, a major power is by 1955.

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procurator (n.)

c. 1300, procuratour, "steward or manager of a household;" also "a provider" (late 13c. as a surname), from Old French procuratour "attorney, agent, proxy, spokesman" (13c., Modern French procurateur) and directly from Latin procurator "manager, overseer, agent, deputy," agent noun from past-participle stem of procurare "to manage, take care of" (see procure). Related: Procuracy; procuration; procuratory; procuratorial.

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vicar (n.)

early 14c., from Anglo-French vicare, Old French vicaire "deputy, second in command," also in the ecclesiastical sense (12c.), from Latin vicarius "a substitute, deputy, proxy," noun use of adjective vicarius "substituted, delegated," from vicis "change, interchange, succession; a place, position" (from PIE root *weik- (2) "to bend, to wind"). The original notion is of "earthly representative of God or Christ;" but also used in sense of "person acting as parish priest in place of a real parson" (early 14c.).

The original Vicar of Bray (in figurative use from 1660s) seems to have been Simon Allen, who held the benefice from c. 1540 to 1588, thus serving from the time of Henry VIII to Elizabeth I, being twice a Catholic and twice a Protestant but always vicar of Bray. The village is near Maidenhead in Berkshire.

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