San Luis Rey is a city located in San Diego County, California. It is named after the Mission San Luis Rey de Francia, which was founded in 1798 by Spanish Franciscan friars. The city's name is derived from the mission's name, which translates to 'KING Louis IX of France'. The two crossword solutions for the term San Luis Rey are REY (3 letters) and OBISPO (6 letters). REY is the Spanish word for 'KING', while OBISPO is the Spanish word for 'BISHOP'.