From his reading of the Ta Prohm Stèle, George Coedès understood a princess named Kambujarajalakshmi to have been Bhavavarman's queen, and that it was through her that he inherited the royal lineage.
Coedès thought he was also very likely the grandson of the king of Funan, a neighboring and more powerful Cambodian kingdom.
[2]: 66–67 However subsequent research by the epigraphist Claude Jacques revealed that Kambuja-raja-lakshmi was the queen of another king, Harshavarman I, who reigned in 910–923 AD, long after the Funan period and so she could not have passed on the royal lineage to Bhavavarman.
According to Coedès, the main accomplishment of Bhavavarman's reign was the expansion of Kamboja into the Mekong river valley, attacking both Funan.
It is not clear, however, if he wanted to claim the throne of Funan for himself, or to simply see Rudravarman unseated so that the next legitimate heir could take it.