Your

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Old English ēower, genitive of gē (see ye1), of Germanic origin; related to German euer .

wiktionary

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From Middle English your, youre, ȝour, ȝoure, from Old English ēower, īower(“your”, plural), from Proto-West Germanic *iuwar, from Proto-Germanic *izweraz. Cognate with Saterland Frisian jou(“your”), Dutch jouw(“your”), German Low German jo, jos(“your”), German euer(“your”, plural), Danish jeres(“your”).

etymonline

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your

Old English eower, possessive pronominal adjective, genitive of ge "ye" (see ye), from Proto-Germanic base of you. Cognate with Old Saxon iuwar, Old Frisian iuwer, Old Norse yðvarr, Old High German iuwer, German euer, Gothic izwar "your." Used in titles of honor by mid-14c.