Although it has been confirmed that he was a real-life person, the name of Mitsuyoshi was first referred to in historical writings around the time when Mitsuhide constructed Kameyama-jo Castle in Tanba no kuni (Tanba Province) (Kameyama City, Kyoto Prefecture), and neither his distinguished service in war nor other contribution is known.
実在は確認されているが光慶が歴史に記されるのは、光秀による丹波国・亀山城(丹波国)（京都府亀岡市）の築城前後であり、目立った戦功や功績は明らかではない。