Boyana Church, located on the outskirts of Sofia, leaves no doubt for scholars to understand the history it depicts through its three buildings and frescoes. Though the eastern part of the building was built in 10^th c according to scholars, it carries no name of its founder;  but it was enlarged by Sebastocrator Kaloyan and his wife Desislaya in the mid 13^th c A.D.

The history of the Church should be seen through the name of Sebasto who was a Kaloyan, same as Koliyan or Cholian to whom later historians see as Chaldaeans or Cholas;  here –crator identifies Ktetor or ktitor as same as ‘Kothi-ghar’ means the ‘residence’ or an official building  of an officer or a leader. It does not identify its ‘founder’; it is not related to the ‘frescoes’ painted on the walls of the ‘kothi’ or ktitor. Koliyans were a royal tribe to which Noah belonged. Similarly Dsislaya is identical with Dusila of Indian puranas.

Thus Boyana exactly identifies the ‘bhubana’ means the ‘royal residence’ of the Bhubanabahu kings of Ceylonese(Kolhan) Chronicles. While Sebasto marks the ancient Subhavastu or Sravsti, Sophia pinpoints the Sobha-(vana) or the forest Sobha near it. Nakula from which the name Nicholas has been derived identifies a place; it was name of Bodhisattva born as an ascetic, and Sobhita Buddha’s chief woman disciple was also identified with this name.

In the 7^th c A.D. the Chinese pilgrim Hiouen Tsiang reported of visiting a place called Baya; it was also name of a Sage whose hermitage was on the bank of the river Cush-bhadra. God Vayu is one of the Eight Gods of the Astarte or Astalokapala. But all these names constitute a part of a single geography.