I have found some story helpers in various storylines but still not in all. If you know more storyhelpers, write them here.
Tales of a sea hawk -
Tales of a chevalier -
Master and commander - I bet there isn't any
Assassin - sailor that approaches you in the Kralendijk port
Bartolomeu o Portugues - Pierre Delacroix that approaches you in Hopital town
Woodes Rogers -
but startstoryline.c file is very helpful
Hoist the colours - random drunk in Tortuga tavern
Chronicles of Horatio Hornblower - Cecil Scott Forester in Saint John's town
Devlin opera/Blaze Devlin -
Please post the story helpers that I don't know.
Tales of a sea hawk -

Tales of a chevalier -

Master and commander - I bet there isn't any
Assassin - sailor that approaches you in the Kralendijk port
Bartolomeu o Portugues - Pierre Delacroix that approaches you in Hopital town
Woodes Rogers -


Hoist the colours - random drunk in Tortuga tavern
Chronicles of Horatio Hornblower - Cecil Scott Forester in Saint John's town
Devlin opera/Blaze Devlin -

Please post the story helpers that I don't know.