[RPG] Who would be the closest to a god of wine in the Forgotten Realms

In all my reading of Realms material over the years, I've never seen the “Roman” approach to other pantheons practiced or even referenced. Other pantheons are generally acknowledged as real, just foreign—a natural effect of living in a world where the individual gods regularly and undeniably manifest in person.

Instead, what you tend to see mentioned while reading Realms campaign materials are small shrines to individual gods or to pantheons as a whole. Where there are even a few worshippers of a god or pantheon, there will be a shrine somewhere where they can pay their devotions and tithe for its upkeep. Not all gods are represented publicly everywhere, since a public shrine to a hostile god would not last long facing the wrath of a local mob (and adventurers!); but such things tend to be either personal and private, or pop up in “underground” or black-market areas where they're overlooked—or better appreciated.

So if you're in human lands, you'll have to seek out some dwarven expatriates and find out where they worship their traditional gods. Failing that, you're on your own—you'll have to pray in this “wilderness” as best you can with your own devices, possibly constructing temporary, poor, personal shrines as you need to. After all, a paladin is a travelling sword of their god—it may be necessary to go to places forsaken or inaccessible to your god at times, as your god charges you to, and you can only do your best to honour them in such places.

Panzuriel is an alias of Umberlee, actually. See here

Umberlee had worshipers among krakens, sahuagin and other evil sea creatures, even though a few of them worshiped her through her alias, Panzuriel

One of her titles is 'Queen of the Depths', but her portfolio is listed as Currents, Oceans, Sea Winds, and Waves. That weresharks and krakens are among her worshipers lends some 'eaty-ness' to her to my eye.

More obscure, and apparently more limited in worshipers is Sekolah, a sahuagin deity known as The Great Shark, The Joyful Hunter, and The Caller from the Depths. If your pirates are sahuagin (or malenti, consider the amphibious template from Stormwrack to not have to worry about breathing, for -2 dex) then they could worship him.

Both of these deities can be found in Faiths and Pantheons as well.