ye.ho.ad.din is used as the proper name of the mother named in Amaziah's reign notice.

The attested forms function as a proper name in the maternal identification attached to Amaziah's reign notice, with the woman said to be from Jerusalem.

1. Proper name in Amaziah's maternal identification · dominant

   In 2 Chronicles 25:1, the form is tagged Noun · Proper in the clause naming Amaziah's mother; the APB renders, “The name of his mother was Jehoaddan; she was from Jerusalem.” In 2 Kings 14:2, the supplied proper-noun forms occur in the parallel maternal notice, where the APB renders, “His mother's name was Jehoaddan; she was from Jerusalem.”

   2 Chronicles 25:12 Kings 14:2

In the Anselm Project Bible: Across both verses, the APB presents the name as “Jehoaddan” in statements identifying Amaziah's mother. The verse is read as a whole, but both clauses plainly place the proper name in that identification.