Sawyer

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Middle English (earlier as sawer ): from the noun saw1 + -yer.

wiktionary

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From Middle English sawyer, sawier, sawior, equivalent to saw +‎ -yer. Doublet of sawer.

etymonline

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sawyer (n.)

mid-13c. "one whose occupation is sawing timber into planks, boards, etc." (as a surname from c. 1200), alteration of sawer, agent noun from saw (v.), influenced by French-derived words in -ier (such as lawyer, bowyer, clothier).