someone said "Is fearr déanach ná ró-dhéanach" was a common seanfhocal meaning "better late than never". but I couldn't find any mention of it on the internet. Obviously I know the Irish is correct but I just want if it is a common/traditional saying or was it just someone translating from English to Irish. So have any of you heard of it before?

Is fearr (go) déanach ná ródhéanach means Better late than too late.

Don't know wether it is a "seanfhocal" in Irish but it is an often used phrase in many languages, as well as:

is fearr go deireanach ná go brách. or
Is fearr go mall ná go brách.
which means: Better late than never.
http://www.teanglann.ie/en/eid/never
http://www.teanglann.ie/en/fgb/brách

To me it sounds like an Anglicism. "Too late" in English has a connotation of perilous or tragic consequences. Thus there is a distinction between "late" and "too late." But outside of English, I doubt there is any actual difference between "late" and "too late." If you are late, isn't that by definition "too late"? Otherwise it is not late at all. My guess is that in Irish this would not be idiomatic.

But it is just a guess! ;-)

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ЯГОН ТОҶИК НЕСТ ИНҶО???

Hey again, I just wanted to confirm that this seanfhocal is actually a legitimate Irish saying. I've found it again in a credible Irish learning book