In the Republic of Ireland a couple is required by to give a minimum of 3 months notice of Intent to Marry to your local Registrar;  

As a Registered Solemniser my details are on the Register as a Religious Celebrant     Rev. Janet Stokes, One World Minister. I very much look forward to working with you on your unique Marriage Ceremony.

Janet

 Click here for more details  

https://www.gov.ie/en/service/ac59d3-get-married-in-ireland/