Aointim len mbriathar ó hAonghus ansin.
But about my confusion above.
http://www.nualeargais.ie/gnag/verbend.htm Near the bottom of the page, under 'imperative'.
"The first person plural can be said also -(e)am or -(a)imid instead of -(a)imis."
It seems the form "cosnaíodh muid" found in Ó Siadhail is a dialect form of 'cosnaimid' --> cosnaímis.
I also mixed it with cosnaiDís --> they. :-P
Hmmm. I wonder if Dennis hadn't answered back so I could go figure that out for myself ?? It WAS a great read....
GRMMA a chara.