[2] The royal household, Thekkumkur Kovilakam, were at Vennimala and Manikandapuram near Puthuppally, later it shifted to Neerazhi Palace at Puzhavathu of Changanassery and Thalilkotta at Thaliyanthanapuram (Kottayam).

Due to the increase in the geographical area, Vempolinad was partitioned into two princely states called Thekkumkur and Vadakkumkur.

[5] Ilaya Raja (Prince) of Vempolinad who lived in Vemballi palace (Malayalam: വെമ്പള്ളി കൊട്ടാരം) founded Thekkumkur kingdom at the beginning of the 12th century.

As part of the growth of the market hubs in idanadu (medieval places), it was an intellectual move to have good interventions in the kingdom, the capital shifted to Puzhavathu in Changanassery at the beginning of 15th century.

[12] The relocation of the headquarters to Neerazhikettu Kottaram at Changanassery made it easier for them to ease the commodities that frequent the Vembanadu lagoon and to combat the encroachments of the backwaters of Chempakassery.

By the end of the 15th century, the Thekkumur kings had built a palace and fort near the Thaliyil temple and established another capital on the banks of the river Meenachil at Thalianthanapuram (Kottayam).

[13] The fort, which was about a kilometer in circumference and was about 12 feet high, was made of heavy red sandstone and had six bastions (the tower of view) and five-meters (seven Kol) wide trenches.

An earthen fort along the border of Vadakkumkoor and Thekkumkoor, it beginning from Athirampuzha, it extended to Kondur (east of Pala, Kerala).

As a Dutch map of AD1743 indicates, the boundaries are;[14] Historian K.N Gopala Pillai, Kuruppum Veettil is written of the country's borders in his historical novel "Thekkumkur Rani".

[15] It is believed that a branch of the Pandyan dynasty who had to flee in the 12th century after a dispute over Madurai; later sold their possessions and established a kingdom.

Udaya Kulasekara of the Pandya dynasty was revealed the locals the intent of the robbers who came to loot Ettumanur Siva temple in the early 15th century.

In the congregation that followed Udaya Kulasekara Perumal of Pandya king made the covenant with Kotha Varman Manikandan of Thekkumkur in AD 1419 at Thaliyanthanapuram.

KP Padmanabha Menon writes in the Malabar histories about the authentic account of the country exchange treaties held at the Mukha mandapam of Thaliyil Siva temple.

kuṟimānaṁ keāllavarṣaṁ 614 (AD 1439) The Neerazhi Palace (Changanassery) at Puzhavathu[1] and Talikota Kovilakam (Thaliyanthanapuram) in Kottayam[19] are the main residences of the Thekkumkur kings.

Goda Varman (crown prince of Thekkumkur) and Marthanda Varma of Travancore were classmates at Madurai when they were studying of Rajyadharma.

He sent a messenger to the younger king and told him the fake news, saying, "Departure to Kottayam immediately; the mother's health is bad".

[23] The crown prince Goda Varman decided to leave, boarded the boat and headed north; Marthanda Varma gave him some gifts for Thekkumkur king Aditya Varma Manikandan[25] On the way, he descended on Anchuthengu Fort and received eleven ritual fire by the British authorities.

[32][33] After the subjugation of the Dutch by Travancore in 1742, military operations of Marthanda Varma progressed against the northern neighboring kingdoms including Thekkumkoor.