Apart from Rajputs, several other Indian communities and dynasties have legends of fire-born ancestry. Alf Hiltebeitel theorises that the fire-lineage legends signify a new class of Kshatriya warriors, as opposed to the earlier warriors who claimed descent from the solar and lunar lineages mentioned in the ancient texts. Among the clans now known as the Rajputs, the legend might have been invented by Padmagupta, a 10th-century court poet of the Paramara dynasty. His "Nava-sahasanka-charita" is the earliest source claiming an Agnivanshi origin for the Paramaras. He might have been motivated by the fact that the Paramaras were the only royal family in their region without a mythical account of heroic or divine origin. The 16th century Rajput bards might have extended the legend to include other imperial dynasties, in order to foster Rajput unity against Muslims.