The prophetess. It is not necessary to suppose that the wife of Isaiah must have uttered prophecies because she is called "the prophetess." Titles were given in the East to the wives, daughters, etc; of officials, which merely reflected the dignity of their husbands, fathers, etc.
Even Miriam seems to be called a "prophetess" (Exodus 15:20) from her close relationship to Moses, rather than from any supernatural power that she had. In the Mishna, a priest's wife or daughter is called "priestess" (Cheyne).
Call his name. There is no reason for doubting that the name was actually given. Other Israelites had such names as Jushab-hosed (1 Chronicles 3:20), Haah-ashtari (1 Chronicles 4:6), Romamti-ezer (1 Chronicles 25:4), Machnadebai (Ezra 10:40), and the like.
Assyrian names were even longer; e.g. As-shur-bel-nisi-su, Asshur-kinat-ili-kain, etc. In ordinary parlance, names of this type were commonly shortened, "Shalman-eser' becoming "Shalmau" (Hosea 10:14), "Sennacherib Jareb" (Hosea 10:6), and the like.