Short biographies from HH Dalai Lama's Jangchub Lam Rim Website:
http://www.jangchuplamrim.org/jangchup- ... ographies/
A sample below:
The Fourth Amdo Zhamar, Gendun Tenzin Gyatso (1852–1912)
The Fourth Amdo Zhamar, Gendun Tenzin Gyatso, was born in lower Kham, Tibet, and recognized at an early age as the reincarnation of the Third Amdo Zhamar. He was ordained at age 8 and Je Sherab Gyatso became his main personal tutor, instructing him in the five great treatises. He received full ordination at 20 and took many teachings from great scholars of the day, principal among them Kyabje Arol Rinpoche. For many years he spent the winters in single-pointed retreat and the summers receiving Dharma teachings at Labrang Tashi Kyil.
He drew hundreds of new retreatants to Ditsa hermitage for meditation and in 1903 he helped found Gendun Tashi Choling, part of the upper Ditsa Monastery, which became famous due to the new philosophical curriculum he established there. He became such a great scholar in all five fields of knowledge that when H.H. the Thriteenth Dalai Lama visited Kubum monastery he bestowed on Zhamar Rinpoche the name “King of the Dharma, Mahapandita”. His writings fill 9 volumes including many works on Lamrim, the Perfection of Wisdom, and the middle-way philosophy.