This Hospital is named of Prinzess Maha Chakri Sirindhorn,the second doughter of King Bhumibol Adulyadej.
Ongkharak means the royal guard.
Once king Rama5 visited Mueng Nakhon Nayok when he and his company arrived the area,one of the royal guard get sick and died.The King orderet to build a shrine to commemorate in the area.