Wenji Little Celestial Master's surname is Tang, and she is the youngest daughter of Tang Wangsun, the holder of the Maoshan Lineage.
Others mention the Maoshan Sect and such, but the Maoshan Main Branch never considers itself as any sect.
Maoshan isn't a sect, but the direct lineage of the Supreme Clarity, other sects can claim to be branches of the Supreme Clarity, but Maoshan considers itself the orthodox lineage.
Thus, they refer to themselves as the Maoshan Lineage, and their highest leading figure is known as the holder of the lineage, respectfully addressed as the Celestial Master of the Lineage.
When others speak of the Maoshan Little Celestial Master, they are referring to the Celestial Master of the Lineage.
Who is the Great Celestial Master? There really isn't one, but if you remove the "Great," there is a Celestial Master—the Dragon Phoenix Mountain Zhang Tianshi.
