I have now got a web site for the college but it's in French will have to see if there is an English version.
Oddie is not a nick name it is a surname. Beauharnios married my great great grandad and they lived in Oswaldtwiste in Lancashire, England so I don't think they would have gone to the college if it existed.
As she was born in 1828 it is more likeley her father James
Oddie went over to France
, possible during the Napolionic wars and brought the name back.Josephine was called Beauharnais, her surname, but the college in Canada is Beauharnios, which still sounds like a surname so possible he heard it but didn't realise it was not a firstname.