Who's that noble
100

This man was the true mastermind and power behind Redania's rise in the first half of the 1250's before Radovid V

Who is Sigismund Dijkstra?

200

What was the name of the Noble/General that led the Nilfgardian forces at the Battle of Brenna.

Who is Menno Coehorn?

300
This is Foltest's mistress who had two illegitimate children (Full name for 50 bonus) 

Who is Maria Louisa La Valette?

400

Isengrim Faoiltiarna is theorized to have escaped to one of two places (just need to name one, 100 point for both)

What are either Zerrikania or Haakland?