Son of Sumitada OMURA (a Christian daimyo who was the second son of Haruzumi ARIMA and was adopted by the Omura clan), Yoshiaki OMURA was the first lord of this domain and he continued to rule over this land, which yielded 27,900 koku in rice, even after the establishment of the Edo Shogunate. This domain was extremely unusual given the fact that it was still intact at the time of the Meiji Restoration.
キリシタン大名の大村純忠（有馬晴純の次男で大村氏の養子となった）の子で、初代藩主・大村喜前は江戸幕府開府後も引き続きこの地において2万7900石を有する領主として存続し、明治維新を迎えた極めて稀な藩である。