Wordsworth quotes from Walter Savage Landor’s Idyllia Heroica Decem, Librum Phaleuciorum Unum (Heroic Idylls), first published in Pisa in 1820. Owen and Smyser report that Landor had recently
published an essay defending Wordsworth from his critics, so it appears that Wordsworth
was returning a favor by praising Landor’s work from the 1823 Guide forward. The passage, as loosely translated by John Talbot, reads: “You really ought
to visit the fields of Tivoli, and the lake of Albunea, with its leafy floating islands.”
The lake of Albunea is the Lago Albano.