My wife is Irish I’m British. I recently contacted the Europe Direct Contact Centre regarding our rights when travelling in Europe. The response below might shed some light onto this discussion. Needless to say I’m no expert.
Thank you for contacting the Europe Direct Contact Centre.
A citizen of the UK does not, in principle, require a visa to travel for a short stay of no more than 90 days within any 180-day period in the Schengen area.
The fact that you reside with your Irish wife the UK is, on its own, not sufficient to waive the limits of the 90/180-days rule if you intend to travel on your own to a Schengen Member State.
However, if you are travelling with your wife to a Schengen country, or joining her in a Schengen country, the 90/180 days limitation does not apply. Accordingly, any stays in the Schengen area together with her will not be taken into account when you travel again on your own. Please be aware, however, that in this case you might need to have documentation to show when you were travelling with her and when you were not.
For further information, we recommend that you contact the authorities of the country you would like to travel to:
https://europa.eu/youreurope/citizens/embassies/index_en.htm
You can also find additional information here:
https://europa.eu/youreurope/citizens/travel/brexit-travel-documents/index_en.htm
If you wish to remain in a given country for more than 3 months, both you and your wife may need to register your residence:
https://europa.eu/youreurope/citizens/residence/index_en.htm
Please note that as Ireland is not part of the Schengen area and because your wife is an Irish citizen, this may not apply if you wish to travel together to Ireland.
For information on the Common Travel Area between Ireland and the UK, please see:
https://www.citizensinformation.ie/...n_travel_area_between_ireland_and_the_uk.html
We hope you find this information useful. Please contact us again if you have other questions about the European Union, its activities or institutions.