Complex sentence: The origin of the kingdom is obscure because the earliest mention of this ruling clan is from early 16th century Kannada literature of the time of Vijayanagara King Achyuta Deva Raya and their earliest available inscriptions are from the rule of petty chief Timmaraja II in 1551.
Split into simpler sentences: The origin of the kingdom is obscure because they are first mentioned in early 16th century Kannada literature of the time of Vijayanagara King Achyuta Deva Raya. Their earliest available inscriptions are from the rule of petty chief Timmaraja II in 1551.