CarlManvers2019
Writers Blocked Douchebag
Kingsguard
The Kingsguard, also known poetically as the White Swords[2] or white cloaks,[3] are the royal bodyguards of the Iron Throne. Regarded as the finest knights in the Seven Kingdoms,[4][5] they are sworn to protect their king and the royal family with their own lives, to obey his commands, and to...
awoiaf.westeros.org
Ned Stark somehow hires Conan to be entrusted in doing the job of rescuing Lyanna, because he can somehow tell that if he goes, lots of his men will die by the Kingsguard's swords
He hired Conan before for Robert's Rebellion and found him to be an extremely competent Sellsword whom admittedly couldn't speak a lick of Common Tongue or anything Essosi, but learned quick and showed himself far more intelligent than his frame would suggest
Admittedly this' probably OOC because of Ned's honour and because he wants Lyanna saved