Harper

wiktionary

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From Middle English harpere, from Old English hearpere(“harpist, harper”), equivalent to harp +‎ -er. Cognate with Middle Low German harpære(“harper”), German Harfer and Harfner(“harper”).

etymonline

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harper (n.)

Old English hearpere "one who plays the harp," agent noun from harp (v.). As a surname from late 12c. Compare Middle High German harpfære, German Harfner.