Murkfin was the first of the twins to be spawned. Like all Merrow children, Murkfin was born a genderless tadpole. Despite their parents best attempts to shelter them from Court intrigue, they learned to manipulate other creatures at a tender age. When their martial lessons began, their tutors insisted upon separating their lessons from those of their sibling, Sunscale. They had little interest in lessons, and were somewhat arrogant and distant with everyone but their father, Aldmer, who they adored.
When the time came to Choose, they surprised their family by deciding to embrace fluidity, choosing to align with no gender or all genders. They chose the name Calliope after the tales their father often spun of the surface world.
As they grew, to their chagrin, they began to take after their mother more and more. They resented their Unknown heritage, and frequently daydreamed about Arvandor rejoining the surface world. Their arguments are thought to have swayed their mother, Neried's decision to raise the city and open negotiations, making them somewhat of an outcast at Court.