Green’s Dictionary of Slang

gulder v.

[gulder n.]

(Ulster) to shout.

[Ire]J. Morrow Confessions of Proinsias O’Toole 22: I had two Powers down me and was starting on a third before they guldered the last stanza.
[Ire]Sun. Trib. (Dublin) 2 June n.p.: There was too much screaming and guldering and I was concerned that all that tension would distress the baby [BS].