A foremost disciple of Naropa received all of Naropa's knowledge. This disciple was Marpa. Marpa was a great translator who was also popularly known as Chokyi Lodoe. In order to receive the tantric methodology and teachings of the Lord Buddha, Marpa traveled from Tibet to India thrice. He was a dedicated disciple who made great sacrifices: scaling high mountains and threading on treacherous routes to seek the sacred methods of Tantric practices as well as the teachings of the Enlightened One: The Buddha. It was through Marpa that these teachings and tantric practices spread far and wide all across Tibet.
Milarepa is one of the greatest tantric yogis of Tibet. This extremely famous yogi was the heart disciple of Marpa. He lived in Tibet from 1052-1135. The perseverance and dedication he has displayed in his practice of the Mahamudra and the Six Yogas of Naropa still inspire many practitioners till this very day. His attainment of the most profound realization of the ultimate nature bore fruit only after dedicated and ceaseless practice.
Marpa
Milarepa