King Boromma Chayasiri was a ruler of the Singhanavati

Singhanavati

The ancient Lanna society of the northern Thailand is considered more progressive than societies in other regions of the same period in that the Lanna people recorded their history and social development. Records concerning cities in the Chiangmai and Chiangrai Basin have proved well-grounded. A...

 City-State Kingdom in Thailand

Thailand

Thailand , officially the Kingdom of Thailand , formerly known as Siam , is a country located at the centre of the Indochina peninsula and Southeast Asia. It is bordered to the north by Burma and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the...

, prior to the Sukhothai Period

Sukhothai kingdom

The Sukhothai Kingdom ) was an early kingdom in the area around the city Sukhothai, in north central Thailand. The Kingdom existed from 1238 till 1438...

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Accomplishments

According to M. de la Loubere, Chayasiri is said to have built the city of Pipeli in Phetchaburi Province

Phetchaburi Province

Phetchaburi is one of the central provinces of Thailand. Neighboring provinces are Ratchaburi, Samut Songkhram and Prachuap Khiri Khan...

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Move to Nakhon Thai

Chayasiri, along with many of his subjects, moved to Nakhon Thai

Nakhon Thai

Nakhon Thai is a subdistrict in the Nakhon Thai District of Phitsanulok Province, Thailand.-Geography:Nakhon Thai lies within the Nan Basin, which is part of the Chao Phraya Watershed.-History:...

 in Phitsanulok Province

Phitsanulok Province

Phitsanulok is a provinces of Thailand, located in the north. Neighboring provinces are Loei, Phetchabun, Phichit, Kamphaeng Phet, Sukhothai, Uttaradit. In the north-east it also has a short border with Xaignabouli of Laos....

in 1188, making Nakhon Thai the capital of the Singhanavati Kingdom for a period of time.