The sources conflict on the date of Śākyaśrībhadra's birth and death. The dating basically falls into two groups: one arguing for an earlier birth (in 1127) and a very long life-span (of ninety-eight years), and the other proposing a somewhat later birth (in the 1140s) and only a moderately long lifespan. ངག་དབང་སྐལ་ལྡན། (b. 1951) concludes that "[t]he Mahāpaṇḍita was probably born in the 1140s."; see Jackson 1990a (p. 18 n. 1)