Yommarat

Yommarat () is a Thai noble title historically given to the minister of the Krom Mueang or Nakhonban, one of the four ministries under the "chatusadom" system, charged with keeping the peace in the capital. Holders of the title were usually given the high-ranking rank of "phraya" or "chaophraya".
List of titleholders.
Past holders of the title include:
During the Thonburi period:
During the Rattanakosin period 
Following the death of Chaophraya Yommarat (Choei), the title was left vacant, as the government was undergoing structural reforms abolishing the "chatusadom" system. A committee of four officials was established to oversee its functions in the interim period, before a modern ministry was re-established, named Krasuang Nakhonban or the Ministry of Metropolitan Affairs, in 1892. Prince Nares Varariddhi was named the first minister. In 1907, he was succeeded by Phraya Sukhumnaiwinit, who was named Chaophraya Yommarat (Pan Sukhum) the following year. He was the last holder of the title; the ministry was subsumed into the Ministry of Interior in 1922.