from H3162 with pronominal suffix; his unity, i.e. (adverb) together; Jachdo, an Israelite; Jahdo.
Usages throughout the bible
1 Chronicles 5:14
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These are the children of Abihail the son of Huri, the son of Jaroah, the son of Gilead, the son of Michael, the son of Jeshishai, the son of Jahdo, H3163 the son of Buz;