Can you give a list of how all the ancestors died if we have any knowledge on how?

The Signless - killed via torture

The Handmaid - killed by Condesce

The Summoner - ??? (may have been killed during large scale rebellion war)

The Psiioniic- killed by Vast Glub

The Disciple - ???

The Dolorosa - killed by Dualscar

Neophyte Redglare - killed by Mindfang

Marquise Spinneret Mindfang - killed by the Summoner

Executioner Darkleer - ???

The Grand Highblood - ???

Orphaner Dualscar - killed by the Grand Highblood

Her Imperious Condescension - still alive 

The Grand Highblood and Darkleer were long lived so they may have lived up to the Vast Glub and were then killed by it.