The Gelug is a branch of which religion?

The Gelug is the newest of the schools of Tibetan Buddhism. It was founded by Je Tsongkhapa (1357–1419), a philosopher and Tibetan religious leader.

The first monastery he established was named Ganden (which gives an alternative name to the Gelug school, the Ganden-Pa), and to this day the Ganden Tripa is the nominal head of the school, though its most influential figure is the Dalai Lama. Allying themselves with the Mongols as a powerful patron, the Gelug emerged as the pre-eminent Buddhist school in Tibet and Mongolia since the end of the 16th century.

The Gelug school was also called the "New Kadam", because it saw itself a revival of the Kadam school founded by Atisha.