Now that fall is full swing this poem seemed fitting:
|小倉山||Ogurayama||O autumn leaves|
|峰のもみじ葉||Mine no mojijiba||on the peak of Ogura Hill,|
|心あらば||Kokoro araba||if you have a heart,|
|今ひとたびの||Ima hitotabi no||I would that you would wait|
|みゆきまたなむ||Miyuki matanan||for one more royal progress.|
Fujiwara no Tadahira was a scion of the Fujiwara clan, and his descendants because the powerful branch that ultimately monopolized power during the Heian Period through intermarriage with the Imperial Family.
As Mostow notes, this poem seems to describe an excursion to the Ōi River by Emperor Uda, with the latter commenting that his son (later Emperor Daigo), should visit too. Hence the author is beseeching the fall leaves to wait for Daigo’s arrival. This visit seems to have led to a seasonal tradition of visiting the Ōi River yearly by the Imperial Family, though I am not aware if that tradition still continues or not.
Side note: there are in fact two Oi Rivers in Japan, one near Kyoto the old capitol, and another in modern Shizuoka Prefecture. Due to location of the Imperial Court, the Emperor and his retinue almost certain visited the near Kyoto. It is, as the photo above helps illustrate, a very scenic and venerable of Japan.