Depends on whose English translation-arrangement you want- there are several.
Lester Levy Collection of Sheet Music has three early ones listed:
1860- G. Denekin "When the bright moonbeams...."
1861- C. Everest "Come now and haste away...."
1864- Armand. "Over the rippling sea"

http://levysheetmusic.mse.jhu.edu/levy-search.html

Compare the English lyrics with the Neapolitan that you see in these and in the ones posted here. If the English version you have selected lacks the name of the translator, we will try to find it by checking issues of sheet music. Translations in school song books often are not credited and can seldom be found.