The Parampara is a succession of spiritual teachers passing down unfiltered knowledge. In order for a teacher to be authentic, his line of authority must come from Lord Krishna.
A short summary of the life of Srila Prabhupada, who spread Krishna consciousness in the West, opening 108 temples and translating many important Vedic texts.
Famously renounced and humble, Gaurakishora Dasa Babaji chanted 2,000,000 names of Krishna every day. His only disciple was Bhaktisiddhanta Sarasvati, spirtual master of Srila Prabhupada.
Bhaktivinoda Thakura balanced being a high court judge, maintaining a Krishna conscious family, and writing almost one hundred books on Krishna consciousness.