Carranam means soulmate in another language. Rowan even proves his complete loyalty to Aelin when he swears the blood oath to her after Maeve frees him from his blood oath to her due to Aelin forcing her hand. Rowan and Aelin's relationship grows even more they became more than friends but less than lovers when they became carranam during the battle of Mistward. They soon start building a relationship as friends, and Aelin even remarks that she had loathed him because she felt that she was looking at a mirror image of herself. However, after going through a lot together, such as fighting to get rid of skinwalkers and hunting for dead bodies washed up on shores, a slow understanding starts to develop between them both. The relationship between Rowan and Aelin, in the beginning, is strained, to the point of getting into fistfights and beating each other to a pulp. Rowan is a distant relation to Aelin through their shared blood from Mab and Mora. Upon meeting in Mistward, Maeve gives him the order to oversee Aelin's training before she is allowed into Maeve's realm in Doranelle. Rowan and Aelin first meet in Wendlyn in Heir of Fire when he is given the orders from the immortal Queen Maeve to take Aelin to see her. He’d waved her off and wiped his face with a snarl, but she had a suspicion that he’d let her get past his defenses.

Still the next time she used the bathing room, she’d snuck behind his chair at the worktable and planted a great smacking kiss on his cheek. She tried to embrace him, but he would have none of that, and told her as much. And he’d returned to Celaena with chocolates, since he claimed to be insulted that she considered his absence a proper birthday present.

The crown of midnight