Analysis of I met a King this afternoon!

I met a King this afternoon!
He had not on a Crown indeed,
A little Palmleaf Hat was all,
And he was barefoot, I'm afraid!

But sure I am he Ermine wore
Beneath his faded Jacket's blue—
And sure I am, the crest he bore
Within that Jacket's pocket too!

For 'twas too stately for an Earl—
A Marquis would not go so grand!
'Twas possibly a Czar petite—
A Pope, or something of that kind!

If I must tell you, of a Horse
My freckled Monarch held the rein—
Doubtless an estimable Beast,
But not at all disposed to run!

And such a wagon! While I live
Dare I presume to see
Another such a vehicle
As then transported me!

Two other ragged Princes
His royal state partook!
Doubtless the first excursion
These sovereigns ever took!

I question if the Royal Coach
Round which the Footmen wait
Has the significance, on high,
Of this Barefoot Estate!