Thanks again, petit élève. Very helpful.

"water meadow" a bit technical. Maybe you could find a more poetic equivalent, like "prairies gorgées d'eau" or something like that ?
---I was afraid of that; the gaelic word lèantaichean actually means "habitually wet meadows", so "prairies gorgées d'eau" is a good fit.

exclu --- paria is definitely OK, in one of its senses (the sense equivalent to English "outcast" which is what my English translation should have used - I'm going to change that too). It's good when your comment on my French makes me look a bit harder and spot a problem with my English! And "bon à rien" is perfect for "gun stath" and will make me change the English for that, too.

Que ton genre dit toujour des choses -> "toujours"
I don't see what you want to convey with this initial "que". I think you could do without it, unless there is some special meaning in the Gaelic text.
--- I keep on doing that in every language (including English) when I'm translating from gàidhig; there's a construction which uses a dependent more verb in what looks like a subordinate clause introduced by "Gu'n" ("That") instead of an ordinary main clause with an independedent mode verb - it's a form of emphasis, something like "il est vraiment vrai que ..." instead of just "...", but mostly the emphasis is pretty slight except when the verb is the one which forms compounds with the word introducing the clause (the defective verb "is" which is the verb that expresses identity or inherence). When I notice I've done it I delete the intial "that". There's another one just a few lines further down, Ill fix that too.

Qui causent l'exclusion -> but this really sounds strange in French.
--- I hope "Qui les mettent partout en paria" sounds less strange.