It is possible that E.C. is Ezekiel Clarke, the friend of Phineas Fletcher; but this identification is no more than a guess. The poem from which these lines are taken is written against one John Vicars, and must immediately postdate his XII Aeneids of Virgil (1632).
From Vindiciae Virgilianae, Bodleian MS. Ashmole 38, fol. 130: Virgil awake…
Spencer a wake thee from thy clayeie bed
Let tyme throw of deathes dusty coverlid;
Knocke up they Tytirus too, that bard of yore
Who sleeps close by thee, at next marble dore
Chaucer now scower thy rustye gat, and fyer
Stricke from his Flinty pate, who first did mare
The muses garden with his common shere
And stencht thes flowers, with Nessus poysnous gore,
That Garden wheare thy choysest flowers grew
Those flowers from whence thy bees ther honye drew
Spencer a wake thee see heer's one hos spoyld
Those Mantuan gemms, and their true Luster soyld
Those gemms, where with a round embellisht been
Th'embroydred robes of thy blest Fayrie Queen
Lett hym bee Counted as the mad dog starve
In thy everlasting sheppardes Callendar,
Spencer a wake the lett this scribler knowe
he doth a scorne to all the muses owe.
Thy tunes heroick for a scourg exchange
And whip from Phoebus hostes this made doges Mange.
Johnson a wake…