Overview
The language of the kingdom of Baekje (4th to 7th centuries), one of the Three Kingdoms of Korea, is poorly attested, and scholars differ on whether one or two languages were used. However, at least some of the material appears to be variety of Old Korean.
Description in early texts
Baekje was preceded in southwestern Korea by the Mahan confederacy.
The Chinese Records of the Three Kingdoms (3rd century) states that the language of Mahan differed from that of Goguryeo to the north and the other Samhan ('Three Han') to the east, Byeonhan and Jinhan, whose languages were said to resemble each other.
However, the Book of the Later Han (5th century) speaks of differences between the languages of Byeonhan and Jinhan.
Historians believe that Baekje was established by immigrants from Goguryeo who took over Mahan, while Byeonhan and Jinhan were succeeded by Gaya and Silla respectively.
According to Book of Liang (635), the language of Baekje was similar to that of Goguryeo.
Chapter 49 of the Book of Zhou (636) says of Baekje:
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