KV54 - The Tomb of Touatankhamanou - References to Ay

I have been reading the Theodore Davis report / catalogue on the tombs we now know as KV57 and KV54, Horemheb and the Tutankhamun embalming cache. Davis thought the latter was actually the tomb of Toutankhamun.

I'm puzzled. The catalogue lists I think three or four pieces of gold leaf found in the tomb with reference to King Ay. In most he is King and his name is in a cartouche, suggesting I guess that he was an official mourner.  Item 4 though has a reference to "The Divine Father Ay".   This is not in a cartouche but is associated with a high official stood before Tutankhamun and carrying a fan.

So whose father was he and what made him divine before he took the throne? Maybe the glyphs were mistranslated?  Sorry, I don't have answers but am asking questions here. Am I missing something because to be a divine father wouldn't he need to be the father of a Pharaoh?

Reference: The Tombs of Harmhabi and Touatânkhamanou, Theodore M Davis, 1912 - reprinted, Duckworth p128