I don’t believe this is exactly right…how do we know that their first marriage was “invalid”?
No, @TheOldColonel is correct. However, you make a good point: some folks have a blessing on the anniversary of their wedding, and they sometimes call these a “renewal of the vows” or another such thing.
A couple’s vows never ‘expire’, so they don’t need to be ‘renewed’. (The current Rite of Matrimony book has a really nice anniversary blessing (which is
not a ‘renewal of vows’!)).
On the other hand, a ‘convalidation’ is precisely what happens in the case that a couple was not married validly in the Church and wishes to correct that situation. So, if the OP says it was a convalidation, then it was an actual marriage that is valid in the Church, following a wedding that was valid civilly.
’ They may have both not been Catholic at the time
If they were both already baptized, then the marriage was already valid at the time of the original ceremony, so… no convalidation.
If one was unbaptized, then the marriage became valid at the time of the unbaptized spouse’s baptism, so… no convalidation.
, or one may have been Catholic and correctly when through the paperwork to get permission to be married in another church. If that were the case, the first marriage is be perfectly valid.
If so, then… no convalidation.
Not enough information here to just jump out and assume the OP’s marriage is/was somehow invalid.
If it was convalidated – and it sure sounds like it, based on the OP’s description – then we really
can conclude that it previously wasn’t valid in the Church. (However, it’s possible that the OP is using the term incorrectly, I guess…)