Tony (Antonio) Pastor, 1837-1908, was a famous singer and theatre owner in New York. Lillian Russell debuted at his theatre in 1880. At some point, Pastor made "The Song of All Songs," with the line already posted by Joe Offer, "For everything is lovely, and the Goose hangs high."
A link to a Univ. California Los Angeles website, Gives the words to "The Song of All Songs," but states that it was written and sung by Tony Pastor, to the air, "The Captain with His Whiskers." The words are identical to those posted for Stephen Foster. The "Captain" appears in three versions (American Memory), one from Masran, one from Johnson, sheet music printed in Richmond and Atlanta during the 1860s. There is also an audio of Hubert Brady singing the song in the Cowell Collection. The tune is quoted in one broadside as being the same as the "Continental March."
There are other versions, all seemingly from the 1860s, but the war and its generals are not named in the Masran and Johnson versions.

So far, the earliest mention of "Everything is lovely and the Goose Hangs High" is from the 1850s (see post above) but no pre-Civil War lyrics yet.