Of course, the Darien mentioned in the poem by John Keats, below, is not the same as the one in Connecticut. Keats' Darien is Darien Province in Panama. Locals in Conn. pronounce their hometown, 'dairy-ANN', or so I was told.
The other Darien, the only other one that I have ever heard of: I suppose that ever since Keats wrote this sonnet, people have been pointing out that Vasco Núñez de Balboa, not Cortes, was the first European to see the Pacific Ocean:
On First Looking into Chapman's Homer
Much have I travell'd in the realms of gold,
And many goodly states and kingdoms seen;
Round many western islands have I been
Which bards in fealty to Apollo hold.
Oft of one wide expanse had I been told
That deep-browed Homer ruled as his demesne;
Yet did I never breathe its pure serene
Till I heard Chapman speak out loud and bold:
Then felt I like some watcher of the skies
When a new planet swims into his ken;
Or like stout Cortez when with eagle eyes
He star'd at the Pacific — and all his men
Look'd at each other with a wild surmise —
Silent, upon a peak in Darien.