The Kallisti Family, then Dr. Pasteur Galt and Family, will be aiding the uprising.
Since this is aiming to be more event based, some various characters for the events...some of my ideas...
...Can have Galt's wife being the real reason for him supporting the locals somehow (maybe shes one of those who dies from the initial poisoning as his motivation...personally like this angle[very braveheart/patriot-like])
...Galt, as discussed before, supplying medicines/poisons/explosives(more homemade sort like Molotov cocktails)/funds
...Galt's kids helping in the fights as "combat" medics
...Apothecaries back then were essentially doctors and surgeons, Galt and Family could operate a hospital/conduct surgery to save someone vital to the cause or even an Eluvataran who turns and supports the cause
...Smugglers/Traders/PMC (from the Allied States?), selling arms/supplies/mercenaries to the locals and/or Eluvataran companies