I've dug up one more example of Paul Revere verse—perhaps the earliest poetic commemoration of the silversmith's ride on 18-19 April 1775, written by one "Eb. Stiles" twenty years later. David H. Fischer quotes this item in Paul Revere's Ride, saying it comes from a manuscript at the Massachusetts Historical Society.
This verse shows not only what a fine poet Longfellow was, but also what a relatively fine historian. Not only does Stiles's poem say that Revere reached Concord, but it describes him and his horse getting there by swimming:
He turned his steed through field and woodOne if by land, two if by sea, indeed. But I do like the daring rhyme of "river" and "together."
Nor turned to ford the river,
But faced his horse to the foaming flood,
And swum across together.
He madly dashed o’er mountain and moor,
Never slackened spur nor rein
Until with shout he stood by the door
Of the Church on Concord green.