Greetings Joey,
Also thanks for the reminder that for those who enter the European missions using ancestry, they need not have their roots specifically in the country where they are doing their ministry, they can gain citizenship in whichever the country they have the ancestry that qualifies them, and then use the free movement principle in the European Union to move to where they are ministering. If you have a passport to any country in the EU, you can go anywhere else there to do your ministry, or of course stay in that country which many of us our missionaries also do.
It's in fact helpful to give a timely reminder of this to our own flock and others engaged in the missions in Europe as this still comes up time and time again, even in our church network where we've been involved in this for decades. We do most of our ministry in France and Germany yet most of our members who have moved there did not qualify to receive citizenship based on their ancestry there, and initially, many of them were upset when they worried they did not quality. But then they were happy to hear that they could for ex. use their ancestry in Ireland, Poland, Italy, Greece, Spain, Sweden, Finland, Estonia, Portugal, Austria, Slovakia or wherever else they had it to get an EU passport and join the ministries there. Or of course in other cases to stay in their ancestral countries to join those ministries or start their own, or in still others to use their French or German ancestral passports to move in the other direction. (And of course also as mentioned, some entering through non-ancestral paths to do the same) This again is one of the beaties of the missionary path, there are countless ways to arrive where you want to preach the Word of the Lord, and many ways to seek guidance on getting there.