Many Secret Societies, Cults, or Factions are warlock groups. I have posted some notes on the World Setting thread:
link to a message in another game
Now, the only warlocks the Druids are considering will be Arch Fey patronage. Any familiars be they Tome Ritual or Chain ability, will be Fey.
For the most part, independent warlocks are either Hedge Wizards (the local name for cunning men) or Witches (the local name for wise women). Guild Artisan (Alchemist) is the most likely background.
Hedge Wizards tend towards a more Sagely approach (although they are likely simple Guild Artisans, like most town dwellers) and follow the Tome Pact, with Rituals.
Witches tend to be more concerned with local goings on and maybe a bit nosy. Chain pact, often with the black cat of legend.
However, every so often some young lad or lass in dire straights while trying to defend someone or something attracts the notices of...something...and, rather than dying, gets a bit of a boost. These sorts of local heroes almost always become Blades. And they have no idea who their patron is...to start.
There is another sort of Warlock, of course: Erin's Faithful. This will be covered in the Local Extras thread.
Note: The Irish don't do snakes. Not as Familiars, not as a summons, etc. The spells just don't seem to work on the Island.
This message was last edited by the GM at 05:09, Tue 17 Mar 2020.