Richard

wiktionary

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From Middle English Rycharde, from Old French Richard, from Medieval Latin Richardus and Ricohardus, from Frankish *Rīkahard, from Proto-Germanic *Rīkaharduz, a construction of *rīks(“king, ruler”) +‎ *harduz(“hard, brave”). Cognate with Old High German Rīcohard(“Richard”). A hypothetical Old English equivalent *Rī‌ċheard would also yield an identical "Richard" in Modern English, though it is unknown if the Old English equivalent existed.

etymonline

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Richard

masc. proper name, Middle English Rycharde, from Old French Richard, from Old High German Ricohard "strong in rule," from Proto-Germanic *rik- "ruler" (see rich) + *harthu "hard," from PIE *kar-o- (from PIE root *kar- "hard"). "One of the most popular names introduced by the Normans. Usually Latinized as Ricardus, the common form was Ricard, whence the pet form Rick, etc." ["Dictionary of English Surnames"]