Another connection between Jesus Burgess and Brook is that Brook pulls a lot of inspiration from The Nightmare Before Christmas, and Burgess' birthday is Christmas Eve, the night before Christmas!
Im eagerly awaiting this theory to be correct, but theres one thing I just can't find myself getting convinced on: Geryon is not a minion of Hades. He is a monster connected to herding and stealing cattle. In mythology he seems to represent wildness and gets overcome by Hercules/Hercules as part of the 12 labors. This doesn't takeaway from the theory that Blackbeard might possess powers related to the moon god/underworld. Another thing: there's a mythological theory that states that Hades is one of Poseidon's old titles that just separated from him overtime - there an ancient version of Poseidon during the Mycenean Greek era that is both the god of the sea, but also the lord of earthquakes and a psychopomp that lords over guiding souls from this world to the underworld. If Oda is aware of this and is trying to model Blackbeard with this Ancient Mycenean god that has control of the Sea, of Earthquakes and of guiding dead souls, then I think you are spot on. This is just a theory though and no solid evidence can be provided.
1:24 Indra and Agni's father Dyaus/Deus (sky father) and mother Prithvi (earth mother), Both are primodial (oldest) gods in vedic scripture "Rigveda" and all the other gods are said to be the offsprings of these two including "surya" sun god. It is interesting cause both Dyaus and Prithvi are also identical to zoro's parent's "Arashi" and "Tera" (earth) and luffy's father Dragon is also believed to have power to control wind/weather, So could luffy's mother be related to "Earth"? reference - kzbin.info/www/bejne/Z5ypg5eCr5WXd7M at 5:03 in this video he also talks about "Indra defeating and killing a great serpent who had encircled the worlds ocean and caused a drought" [Redline]