King Shurasena and his children
Shurasena (शूरसेन) and his wife Marisha (मारिषा) has 10 sons named as Vasudeva (वसुदेव), Devabhaga, Devasrava, Anaka, Srnjaya, Syamaka, Kanka, Samika, Vatsaka and Vṛka
They have five daughters – Pritha (पृथा), Srutadeva, Srutakirti, Srutasrava and Rajadhidevi,
Relationship between Krishna and Pandavas
Kunti was the sister of Vasudeva (वसुदेव), as they both are born from King Shurasena and his wife Marisha.
Kunti was adopted and raised by Kuntibhoj, but his biological father was King Shurasena.
So the relationship between Krishna and the Pandavas were of cousins.