Honestly you're pretty safe using nearly any Prince aside from Meridia, as each one could be rationalized as to why a Necromancer might prefer them to, say, Molag Bal.

Hircine: Hunting for corpses, turning the dead into hunters
Mephala: She's effectively a goddess of death, there's lots of ways you could rationalize this one
Sheogorath: Twisting the mind past death
Peryite: Diseased corpses
Namira: See Peryite
Mehrunes Dagon: The revolution of death against life
Azura: Cyclical life/death/undeath

Just gotta be creative, really.

They're not princes per se, but most necromancers either "worship" or at least have dealings with the Ideal Masters, who have their own pocket plane in Oblivion.

I don't think any of the daedric deities have to do with specifically necromancy besides Molag Bal, but as others have mentioned, besides Meridia who is against the undead, a necromancer could reasonably worship pretty much any of them especially Molag Bal (undead, torture or manipulation of souls), Namira (gross creepy things), Peryite (pestilence), etc.

Some of them like Hircine don't really seem like they have anything for or against it, so worshipping them is reasonable. Maybe Malacath wouldn't like it because it might not be an honorable way to fight/live, but I don't really know that much about him.

My necromancer worships Hermaeus Mora because she loves that juicy knowledge, but I don't think he likes or dislikes necromancy in particular


EDIT
I was playing Oblivion again and noticed statues of Namira and Molag Bal in Moss Rock Cavern where several necromancers live. It's also mentioned on UESP
https://en.uesp.net/wiki/Oblivion:Moss_Rock_Cavern

I get the significance of Molag Bal in necromancy but after the main quest line the idea of a necromancy practicing 'hero' worshiping MB gets a bit muddy. Also, any vampiric necromancer holding reverence towards Lamae Bal might find worshiping MB unsavory as well. Though I'm not sure how necromancy and vampirism coexist in ES

Leaning towards Namira since all of Tamriel, at least a solid portion, finds the practice of necromancy repulsive which seems to fit well with her. Mephala sounds like a good choice too though, need to read up some. Thanks for the input!

robertbmilesb14_ESO wrote: »

Sithis if Argonian

Sanguine (Debauchery and utter indulgence)

Namira and wear the primal/barbaric stuff

Boethiah (Treachery, deceit etc.)

My Breton just follows Julianos and to a lesser degree Magnus devotedly and the Nine but is well aware of how Arkay feels. Necromancy isn't "evil" except on moral grounds. Just ask the Dunmer.

Follows the divines and he's a necromancer?

robertbmilesb14_ESO wrote: »

worrallj wrote: »

robertbmilesb14_ESO wrote: »

Sithis if Argonian

Sanguine (Debauchery and utter indulgence)

Namira and wear the primal/barbaric stuff

Boethiah (Treachery, deceit etc.)

My Breton just follows Julianos and to a lesser degree Magnus devotedly and the Nine but is well aware of how Arkay feels. Necromancy isn't "evil" except on moral grounds. Just ask the Dunmer.

Follows the divines and he's a necromancer?

Necromancy is not "evil" per se to everyone and many of its spells could be considered benign. Elder Scrolls is notorious for dealing in the grey. It comes down to perception of the culture/society at large. It was/is perfectly legal in the Empire, providing certain provisions.

https://elderscrolls.fandom.com/wiki/Necromancy

https://en.uesp.net/wiki/Lore:Necromancy

https://en.uesp.net/wiki/Lore:Necromancy:_The_Great_Debate

My Breton is a Mage, much like the Telvanni, to him it's just another art of magic and something he's good at. And a true Breton opportunist .

He's more akin to the Amethyst Wizards like in Warhammer lore, restrained on his use of it and has set his own moral code.

https://warhammerfantasy.fandom.com/wiki/Amethyst_Order

Youre speaking of Responsible Necromancy and its far from par for the course when it comes to the Dark Arts. Even if your character is closer to Vastarie than Mannimarco, its such an abnormal approach to the practice that theres no way youre going to avoid people calling you evil or assuming youre underplaying what it is youre doing.

Molag Bal is good to start with, and than the necromancer may go to depeer layers of evil, like Mehrunez Dagon and Namira. Or deeper layers of knowledge, like Hermaues Mora and Boethiah. Or tricky and dangerous layers - Clavicus Vile and Sheogorath. Meridia doesn't fit at all as she hates undead. Malacath seems unfit, as his sphere is of more open, direct force.
As for the lore sources - well, the basic information on Daedric Lords is quite enough...

One more thought that may be of interest: once I wanted to create a character, an Imperial girl who goes through 16 layers of madness. She started with Azura, was supposed to "taste" all the Dadera Princes worship, and end up being a necromancer worshipping Molag Bal - the ultimate evil. That was TESIV Oblivion. Unfortunately, I didn't complete that game... But the general idea was: the ultimate evil is necromancy + Molag Bal worship. To elaborate the exatct list of the Imperial girl's adventures - which dPrince is the first, which is the seconds, etc... I read a lot on daedra , their realms and impact on Tamriel.

Korah_Eaglecry wrote: »

robertbmilesb14_ESO wrote: »

Korah_Eaglecry wrote: »

robertbmilesb14_ESO wrote: »

worrallj wrote: »

robertbmilesb14_ESO wrote: »

Sithis if Argonian

Sanguine (Debauchery and utter indulgence)

Namira and wear the primal/barbaric stuff

Boethiah (Treachery, deceit etc.)

My Breton just follows Julianos and to a lesser degree Magnus devotedly and the Nine but is well aware of how Arkay feels. Necromancy isn't "evil" except on moral grounds. Just ask the Dunmer.

Follows the divines and he's a necromancer?

Necromancy is not "evil" per se to everyone and many of its spells could be considered benign. Elder Scrolls is notorious for dealing in the grey. It comes down to perception of the culture/society at large. It was/is perfectly legal in the Empire, providing certain provisions.

https://elderscrolls.fandom.com/wiki/Necromancy

https://en.uesp.net/wiki/Lore:Necromancy

https://en.uesp.net/wiki/Lore:Necromancy:_The_Great_Debate

My Breton is a Mage, much like the Telvanni, to him it's just another art of magic and something he's good at. And a true Breton opportunist .

He's more akin to the Amethyst Wizards like in Warhammer lore, restrained on his use of it and has set his own moral code.

https://warhammerfantasy.fandom.com/wiki/Amethyst_Order

Youre speaking of Responsible Necromancy and its far from par for the course when it comes to the Dark Arts. Even if your character is closer to Vastarie than Mannimarco, its such an abnormal approach to the practice that theres no way youre going to avoid people calling you evil or assuming youre underplaying what it is youre doing.

See The Great Debate.

Never did I imply anything of the sort you're speaking of.

It is YOUR perspective and in Tamriel the culture's. Dunmer don't care unless it's on other Dunmer. The Imperial/Empire doesn't care about necromancy (and for a time it was openly practiced completely). The Khajiit don't care and neither do the Argonians.

YOU are the one (or the NPC/organization) who deems it "evil".

That's the point of the great debate.

"no way youre going to avoid people calling you evil"

Let me restate this, no where did I imply other wise. I've merely pointed out how the Lore does not deem necromancy implicitly evil, as many others here have.

I wonder where they would get the idea that the lore implies that necromancy is evil if not for the lore doing so. There is very little lore to actually back up Necromany not being evil. In fact the little we do have is usually that of an outlier and not the norm. Run into any delve or dungeon and theres probably a 50 percent chance of the dead roaming around with some Necromancer/Lich waiting for you to slay them at the end. How many times have we run into a dungeon with the Necromancer at the end wanting to heal the sick and play therapist to the dead?

Just because a handful of biased sources have made the case for why necromancy can be used for good and on the rare occasion has. Doesnt change the fact that the franchise, and ESO to the point of exhaustion, has portrayed the act as evil.

BUT in elder Scrolls Lore there are no objective criteria for "evil" imbued into the universe. The whole IP is notorious for presenting such things as entirely subjective. (Although the stories have clear villains who are automatically evil from the players PoV) Heck even our allies in Skyrim (was it Paarthurnax?) wonder if Alduin is right and speculate that it might be time for the world to end. I just wonder if we ever see a "good" necromancer. It has been done with werewolves and vampires.
But even if the majority of necromancers are "evil" that doesn't mean that the art itself is. As already stated, before TES IV the empire allowed it, and even in oblivion only the mages guild prohibited necromancy (which only extends to its members).
The Dunmer in TES III had some specific laws on it, the art being prohibited in Morrowind IIRC. So maybe the good daedra aren't the best address.