Analysis of information sources in references of the Wikipedia article "Krisnaísmo" in Spanish language version.
Beginning about A.D. 300 a mutation occurred in Vaisnava mythology in which the ideals of the Krsna worshipers were turned upside down. The Harivamsa Purana, which was composed at about that time, related in thirty-one chapters (chaps. 47-48) the childhood of Krsna that he had spent among the cowherds.1 The tales had never been told in Hindu literature before. As new as the narratives themselves was their implicit theology. The old adoration of Krsna as moral preceptor went into a long quiescence. The age of Krsna as sportive being―as a doer of lilas―has begun. It has not ended even now. The great sects that dominate Vaisnava religious life in North India today worship Krsna as Gopala, the cowherd boy.
1. In dating the Harivamsa the surmises of scholars have ranged over the whole of the first four centuries A.D. The estimate of A.D. 300 offered by P. L. Vaidya, editor of the critical edition, has a new solidity (The Harivamsa [Poona: Bhandarkar Oriental Research Institute, 1969], 1:xxxix). The date agrees well with the political world envisioned by the author and with Daniel Ingalls’s analysis that the Harivamsa stands between the Ramayana and Kalidasa in poetic style.