verse 1, line 1
"dá siúlfa an ód liom" should read "dá siúlfa an ród liom" (as mentioned above)

verse 2 last line
"Go dtug ú an chraobh leat" should read "Go dtug tú an chraobh leat"

note opening lines of verse 4 are also the first lines of the Irish language/macaronic version of Carrickfergus
I think it should read "... seal dá lua liom"