“Izumo-taisha” is very famous for its matchmaking God and fortune God. The shrine’s establishment is even written in Japan’s oldest history book “Kojiki,” and was called “Kizuki-Oyashiro” until the early Meiji period (1870’s).
The enshrined God is Okuninushi-no-kami, and is famously known as a grand God. In the history book “Kojiki,” there’s a myth called “Kuni-yuzuri-shinwa” (国譲り神話) that says, Okuninushi-no-kami gave control of the land to Amaterasu-O-Omikami in Takaamahara. The shrine “Amenohisuminomiya” that was built, later became the present Izumo-taisha.