"For a long time, it was assumed that Salazar Slytherin was an only child but recent studies conducted by Mops et al. (1941) proved that he had at least one sibling, potentially a sister, whose first name remains unknown but who is believed having married under the name of Selwyn" Campbell (1942) Or how Tom Riddle's thirst for power brings him to marry that girl.

Young Solweig belonged to the group of those sent to Asgard after the war that opposed the two pantheons of gods. The truce does not last, as her twin brother seeks revenge, and she is claimed as a concubine by the God of Mischief. The story takes place before the first Thor movie. I do not own any of the Marvel characters.