"According to André Wink, another historian, the caste is first referred to around the 5th–6th century CE, and may well have become so identified during the period of the Sena dynasty. Between that time and the 11th–12th century, this category of officials or scribes was composed of "putative" Kshatriyas and, "for the larger majority", Brahmins, who retained their caste identity or became Buddhists. As in South India, Bengal had lacked a clearly defined Kshatriya caste." 