当1279年兰甘亨大帝登基为王时，原始的概念被短暂替换。他背离了传统并创造出“父权统治（英语：Family as a model for the state）”（泰语：พ่อปกครองลูก）的概念取而代之，意思是君主统治人民，就好比父亲教导小孩一样[4][5]。而兰甘亨将他的名字冠以“Pho Khun”的头衔（泰语：พ่อขุนรามคำแหง），用以加强他所创造的概念[6]，然而其维持时间非常短暂。在素可泰王国的末期，原始的两个宗教概念回归，并将君主头衔从“Pho Khun”改为“Phaya Khun”。
Cœdès, G.The Origins of the Sukhodaya Dynasty(PDF). Journal of the Siam Society (Siam Heritage Trust). 1921,. JSS Vol. 14.1b (digital): image 1 [17 March 2013]. （原始内容存档(PDF)于2016-10-20）. The dynasty which reigned during a part of the XIIIth. and the first half of the XlVth. centuries at Sukhodaya and at Sajjanlaya, on the upper Menam Yom, is the first historical Siamese dynasty. It has a double claim to this title, both because its cradle was precisely in the country designated by foreigners as "Siam" (Khmer: Syain; Chinese : Sien, etc.), and because it is this dynasty which, by freeing the Thai principalities from the Cambodian yoke and by gradually extending its conquests as far as the Malay Peninsula, paved the way for the formation of the Kingdom of Siam properly so called.
Prince Dhani Nivat, Kromamun Bidyadabh. The Old Siamese conception of the Monarchy(PDF). Journal of the Siam Society (Siamese Heritage Trust). 1947,. JSS Vol. 36.2b (digital): image 10 page 93 [7 March 2013]. （原始内容存档(PDF)于2016-03-03）. Patriarchal Sukhothai Kingship ...The monarch was of course the people's leader in battle; but he was also in peace-time their father whose advice was sought and expected in all matters and whose judgment was accepted by all. He was moreover accessible to his people, for we are told by an old inscription that, in front of the royal palace of Sukhothai there used to be a gong hung up for people to go and beat upon whenever they wanted personal help and redress. The custom survived with slight modifications all through the centuries down to the change of regime in 1932....
Terwiel, Barend Jan. Ahom and the Study of Early Thai Society(PDF). Journal of the Siam Society (Siamese Heritage Trust). 1983,. JSS Vol. 71.0 (PDF): image 4 [7 March 2013]. （原始内容(PDF)存档于2013-11-03）. In older usage, khun was used for a ruler of a fortified town and its surrounding villages, together called a mueang; with the prefix pho (พ่อ "father") appears as Pho Khun.
