An unnamed son of Domagoj, according to older historiography named Iljko which is probably an erroneous translation of Latin: Yllicus, was a duke (Croatian: knez) in Croatia from 876 until 878.
[1] The name Iljko has later generally been accepted that it was a consequence of a wrong translation of the Chronicle of Dandolo, a Latin text written by Andrea Dandolo in the 14th century.
[2] The name of the unknown duke was probably the result of Dandolo's fantasy.
During the specified timespan a son of Domagoj ruled Croatia, but his name was not preserved (as mentioned by John the Deacon).
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