וַֽיִּלְכְּדָ֛הּ עָתְנִיאֵ֥ל בֶּן־קְנַ֖ז אֲחִ֣י כָלֵ֑ב וַיִּתֶּן־ל֛וֹ אֶת־עַכְסָ֥ה בִתּ֖וֹ לְאִשָּֽׁה׃
Da eroberte es Otniël Sohn Kenas Bruders des Kaleb, und er gab ihm seine Tochter Aksa zur Frau.
Rashi on Joshua
He [Osniel] was the brother of Caleiv. He was his brother from his mother.17After Caleiv’s father, Yefuneh, died, his mother married Kenaz and she gave birth to Osniel.