I wonder if English have ever felt similar offense when people point out the role of France and the french language in their country's and language's development.
Nope. When I realised, I thought holy shit, I pretty much speak French already. Learn some glue words then any word ending in 'able' or 'cial' (and a few others i forget) pronounced in a 'Allo 'Allo [0] accent and you are pretty likely to be talking French. :-)
[0] http://en.wikipedia.org/wiki/Allo_Allo!
I think for the most part they're pretty well aware of the Latin influence on their language. But you might be interested in Googling "Anglish" for the (rather fringe) pushback against the ancient foreign incursion.
