His (Reting rinpoche, regent of Tibet) first choice for a replacement was one of his own Gurus, the famous Pabongkha Tulku. Pabongkha was undoubtedly the greatest living Gelukpa lama of the period, and would have been an ideal candidate. However, he strongly disliked political affairs and distrusted the Lhasa aristocracy. He therefore declined the request.
-Glenn H. Mullin- The Fourteen Dalai Lamas
Glenn H. Mullin is a Tibetologist, Buddhist writer, translator of classical Tibetan literature. His two principal tantric gurus were the late great masters Kyabje Ling Dorjechang and Kyabje Trijang Dorjechang, who were best known as Yongdzin Che Chung, the two main gurus of the present Dalai Lama. Glenn is the author of over 20 books on Tibetan Buddhism. Many of these focus on the lives and works of the early Dalai Lamas.