We know of the children of Lord Shiva and Parvati,Subrahmanya born of Shiva, Ganesha of Parvati.
Veeabhadra is also considered as the son of Lord Shiva.
But Lord Shiva and Parvati has a daughter as well, says The Padma Purana.
Lord Shiva being of Yogic disposition, goes off to Kailash often.
Feeling lonely Parvati prayed the Kalpa Vruksha for a companion and thus was born Ashoka Sunadri.
