Crossword puzzle clue "many a river's end"

___ River (after translation, "Crooked River River")

"I'm the beginning of eternity, the end of time and space, the beginning of the end, and the end of every place ..."

Many a river's end

Many, many, many

Many, many, many

You've likely heard it many many many times before

Skunk River city established to serve the Cedar Rapids and Missouri River Railroad

River whose name is Celtic for "river"