trivia question

[Colonel Talvela]

Somebody smart (that excludes Leto) please educate me.

What does derry mean. as in:

hi ho, a derry-o
the cheese stands alone

[McIvan]

Does it have anything to do with derry-aire?

[Steel God]

Since that version of the nursery rhyme is Irish, I would hazard a guess that Derry-O refers to either the city of Derry, or it's a reference to an Irish boy (Derry being a traditional Irish boy's name).

Versions of this nursery rhyme from the UK used different things for Derry, like London, which makes me believe it refers to Derry the city.