; Peter B.Golden addionally proposed connection with Turkic "uğurluğ" "feasible, opportune", later "auspicious fortunate" or "oğrï" "thief", an etymology more suited to the dynasty's founder's activities; additionally Yujiulü may be comparable to Middle Mongolian "uğuli" "owl" (> Khakha ууль "uul"'), as personal names based on bird names are common in Mongolic.