Francisco Rui (Ríos) y Morales[1] was a Spanish soldier who served as Commandant Governor of Illinois (between 1767 and 1768).
Rui joined the Spanish Army in his youth, eventually reaching Commandant grade.
[2] On January 7, 1767, Louisiana governor Antonio de Ulloa, gave secret instructions to Rui, about the construction of two forts at the confluence of the Missouri and Mississippi Rivers.
[4] Fort Don Carlos el Senor Principe de Asturias was built on the south bank of the Missouri.
Rui left office of Lieutenant governor of Illinois in 1768 and was replaced by Colonel Pedro Piernas.