'Own' in the Bible

and sendeth letters unto all provinces of the king, unto province and province according to its writing, and unto people and people according to its tongue, for every man being head in his own house -- and speaking according to the language of his people.

and in her coming in before the king, he said with the letter, 'Let his evil device that he devised against the Jews turn back upon his own head,' and they have hanged him and his sons on the tree,