The kings and princes were on their way to becoming the caste of Kshatriyas or warriors.
"Myth, Ritual, and Religion, Vol. 1" by Andrew Lang
Prabhu means lord, and this caste descends from the Kshatriyas.
"From the Caves and Jungles of Hindostan" by Helena Pretrovna Blavatsky
Father and Mother were Bengalis, of the KSHATRIYA caste.
"Autobiography of a YOGI" by Paramhansa Yogananda
The Brahmana's sight is without compare, and the Kshatriya's might also is unparalleled.
"Mahabharata of Krishna-Dwaipayana Vyasa Bk. 3 Pt. 1" by Krishna-Dwaipayana Vyasa
Surely, this forebodes a great destruction of Kshatriyas in battle.
"The Mahabharata of Krishna-Dwaipayana Vyasa Bk. 4" by Kisari Mohan Ganguli
The Kshatriyas attain the celestial regions by protecting and chastising the subjects, uninfluenced by lust, malice, avarice and anger.
"The Mahabharata of Krishna-Dwaipayana Vyasa Bk. 3 Pt. 2" by Translated by Kisari Mohan Ganguli
Where be my Kshatriya warriors?
"Hindu Literature" by Epiphanius Wilson
Then, O monarch, were born many Kshatriyas of greater energy, boys and girls, so that the Kshatriya race, might thrive.
"The Mahabharata of Krishna-Dwaipayana Vyasa, Volume 1"
A Kshatriya slayeth a Kshatriya; fishes live on fish; a dog preyeth upon a dog!
"The Mahabharata of Krishna-Dwaipayana Vyasa, Volume 2"
The latter is probably a corruption of Kshatriya.
"Hinduism And Buddhism, Volume II. (of 3)" by Charles Eliot