It may be that we shall lose this battle,” the king said grimly. “In Braavos you may hear that I am dead. It may even be true. You shall find my sellswords nonetheless.”
The knight hesitated. “Your Grace, if you are dead — ”
“ — you will avenge my death, and seat my daughter on the Iron Throne. Or die in the attempt.”
Ser Justin put one hand on his sword hilt. “On my honor as a knight, you have my word.
George R.R. Martin, The Winds of Winter (excerpt)