Malcolm may seem a bit testy , but in truth he is usually a very knowledgeable resource to this forum. I guess we all have our bad days.
Off on the tangent, Old MacDonald in Latin:
With a name like MacDonald he probably spoke Gaelic, not Latin so would this not seem better?

Seann Mhac Dhomhnaill

        Seann Mhac Dhomhnaill. gu robh` ait aig ,
I ai I ai o
Air an aite bha aige cearcan,
I ai I ai   o
Le glug-glug siud agus glug-glug seo
Seo glug, siud glug, a h-uile h_`aite glug-glug
Seann Mhac Dhoinhnaill. gu robh ait aig ,
I ai I ai o.


Seann Mhac Dhomhnail1 gu robh `ait aig
I ai I ai o,
Air an aite bha aige tunnagan,
             I ai I ai o        
Le glag-glag siud agus glag-glagL seo,
Seo glag siud glag h-uile h-`aite glag-glag
,Seann Mhac Dhomhnaill gu robh ait aig
I ai I ai o.

Seann Mhac Dhomhnaill gu robh ait aig ,
I ai l ai o,
Air an aite bha aige geoidh
I ai I ai o,
Le hong-hong siud agus hong-hong seo
Seo hong siud hong, a h-uile h-aite hong-hong
Seann Mhae Dhomhnaill gu robh ait aig
I ai I ai o.
        
Seann Mhac Dhomhnaill gu robh ait aig ,
I ai I ai o
Air an aite bha aige crodh,
I ai I ai o,
Le mu-mu siud agus mu-mu seo,
Seo mu siud mu a h-uile h-aite mu-mu,
SeannMhac Dhomhnaill gu robh ait' aig ,
I ai I ai o


   (*from the late Hugh F. MacKenzie, Christmas Island. Recorded in

   the Cape Bretoniana archives.)