aerelyx and aeressa are trained in 'swordsmanship'.
aeressa's sword is called "the black dread" and is valyrian steel with a dragon head on its hilt - much like dark sister.
aerelyx's sword is called morghul - it's unclear if it was named after the valyrian saying "valar morghulus" or the puny targaryen dragon morghul -
it's not valyrian steel, just a simple blade, with a basic hilt, decorated with three dragon heads at the beginning of it, to symbolize aegon, rhaenys, and visenya, or in their case, daenys, aerelyx, and aeressa.
raegor also has a sword, called
"nights edge - protector of dragons"
which is a valyrian steel blade that has been passed down the blackfyre line for some time. he wishes to give it to one of his children come time, but is unsure since the both of them already have swords.
SPOILERS FOR UPCOMING CHAPTER
during an attempted attack on azasea to kill aeressa and aerelyx (since they have a claim to the iron throne), aeressa is wounded and in attempt to help her, aerelyx drops his sword after killing a man and leaves it as he goes to help her into the castle.
one of the men attacking the castle steals his sword, so it's likely he will receive nights edge, but i'm still unsure.
