Prince Benbadhanabongse was given the royal title from his father as Kromma Muen Phichai Mahintharodom, or translated as The Prince of Phichai on 2 October 1904.
Phraya Phichai was born in 1741 at Ban Huai Kha, Amphoe Phichai, Changwat Uttaradit, having four brothers and sisters but three of them died before Phichai”s birth.
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Phraya Phichai (th: พระยาพิชัย), or popularly known as Phraya Phichai Dap Hak (th: พระยาพิชัยดาบหัก; Phraya Phichai of the broken sword) (born: 1741 at Ban Huai Kha, Amphoe Phichai, Changwat Uttaradit; died: 1782) was a historic Thai nobleman in the Ayutthaya period who fought with a sword in each hand until one was broken.