The horse-couplet is a quotation from the earlier poem; the original Roan had inspired a trial of rhyming betwixt Cooke & Burlingame-disguised-as-“Cockerouse”; Ebenezer & his sister had indeed been “left in the lurch,” and Andrew III born therefore outside “the Church.”
More subtle is the reference to his guide as “the Spurious Offspring of some Tawny-Moor” (Ebenezer’s prostitute-wife, Joan Toast, was once ravisht by the Moorish pirate Boabdil, and Burlingame’s ancestry, like yours & mine, was racially mixt). “… to glut the Market with a poisonous Drug” refers of course to the overproduction of “sot-weed” in the colony, the poem’s explicit theme; but it alludes covertly to the opium traffic in which Burlingame involved Ebenezer Cooke in the 1690’s.
I call’d the drowsy Passive Slave
To light me to my downy Grave…
and
…we thought it best
To let the Aethiopian rest…
overtly refer to the “one that pass’d for Chamber-Maid” at the inn where this encounter takes place (note that she too is suspected of being other than she seems), whilst they secretly remind Burlingame of the poet’s near-martyrdom at the stake in 1694 by that conspiracy of escaped slaves & Ahatchwhoop Indians on Bloodsworth Island, which Burlingame had gone ostensibly to “put to rest.”
Most interesting of all is Cooke’s prediction that his fellow Marylanders
Will by their Heirs be curst for [their] Mistakes,
E’er Saturn thrice his Revolution makes…
That is, literally, within three generations, when the land will have been deforested & the soil exhausted by one-crop tobacco farming. But the “three revolutions” (Saturn’s period is 29½ years), reckon’d roughly from the date of Cooke’s composing
That runs (alas!) and ever will run on.
Anna Cooke indulged this folly, if folly it was, but resisted the temptation to
Upon Anna Cooke’s death not long after, Andrew found among his “aunt’s” papers a letter addrest to him, to be open’d & read along with her will (both documents are here in the Castines’ library). It confest the facts as aforerehearst: that she, not Joan Toast Cooke the prostitute, was his mother, Henry Burlingame III his father, Eben Cooke his uncle.
At his then age (about 36), his parents’ names were of less interest to Grandfather than their nature: accepting as true Anna Cooke’s final version of the former, what Andrew felt the greatest urgency to decide was whether, as his Uncle Eben had maintain’d, his father had been a fail’d revolutionary in the cause of his Indian brothers & their African allies, or, as his mother affirm’d, a victorious anti-revolutionary in the cause of the British colonial government.