|Diane and Sebastian|
Mother and Son
When Bash was born
|“||I will protect your secret as long as you leave today. I can't bear to look at you as you are now much less hanging from a rope. Go and never come back.||”|
Sebastian is Diane's illegitimate son by King Henry. The two have a loving mother son relationship, though Bash doesn't approve of his mother's schemes to legitimize him. This relationship comes to a head however, when Bash learns that Diane killed Henry and Catherine's infant twins.
In the Pilot,
In Chosen, Diane tells her son Bash about the dangers of being in the blood wood with the Pagans, as now they want a sacrifice from Bash. Bash is worried about paying this debt; however his mother warns him that if he doesn't pick a sacrifice, then the Pagans in the woods will choose for him and it may very well be Mary.
In Left Behind, Sebastian is shocked when Diane proposes to her son about having him legitimized so that he could legally inherit the French throne. Bash is horrified by this since it can be seen as treason and lead to death for both him and his mother, as well as forever changing the line of succession, and eliminate Henry and Catherine's children from sitting on the French throne.
In Fated, Queen Catherine blackmails Diane into leaving the castle and never returning after finding out about her plans for Bash. Diane meets up with her son and tells him that she must leave the castle if she is going to survive the Queen's wrath.
In Banished, When Diane de Poitiers returns to French court, she first encounters her son Bash and her daughter in law Kenna. Diane doesn't see to thrilled with Bash's wife; however she appears to be happy that her son is happy. Later after learning from a servant that he and Claude captured, that his own mother was responsible for killing the infant twins of King Henry and Queen Catherine. Diane did this because she was jealous that the Queen got pregnant again since Henry was still sleeping with her and Diane; Bash learns that after destroying the chapel, Diane went into the nursery and opened the windows so that the babies would be exposed to the cold and freeze to death. Bash is furious with his mother, disowns her and tells her to leave and never return as he doesn't ever want to see her again.
- As of Banished, Bash disowned his mother, and refused to ever see her again, after discovering that she was responsible for the deaths of Henry and Catherine's twins.
- Though Catherine murdered Diane because of this, Bash still has no idea that his mother is dead.
- In Safe Passage, Bash learns from Catherine that she killed Diane to avenge the deaths of her infant twins. Bash tried to kill Catherine because of this and then left to join Mary in Scotland.
- During season one, Diane plotted to have her son legitimized; which if successful would have changed the entire line of succession to the French Throne and eliminated the sons of Henry and Catherine.