King Uttānapāda had two queens, named Sunīti and Suruci. Suruci was much more dear to the King; Sunīti, who had a son named Dhruva, was not his favorite.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
जाये उत्तानपादस्य सुनीतिः सुरुचिस्तयोः । सुरुचिः प्रेयसी पत्युर्नेतरा यत्सुतो ध्रुवः
jāye uttānapādasya sunītiḥ surucistayoḥ | suruciḥ preyasī patyurnetarā yatsuto dhruvaḥ
SB 4.8.8