The most famous example is the lineage of Dalai Lamas; the current Dalai Lama, Tenzin Gyatso, is held to be the fourteenth mindstream emanation, the first being Gendun Drup (1391 – 1474).
The bloodline of the Dalai Lama is a famous example. Tenzin Gyatso is believed to the be the 14th mindstream emanation. Gendun Drup (1391-1474) was the first. Mindstream emanation is a common Buddhist theory that is part of full enlightenment.