Some hint for those who have problems with finding ancestral town of ancestors. Let us have an exampe. You know that grandfather X and grandmother Y were from the same town and got married either in Poland or abroad. However you do not know the name of their ancestral town. The help might come from this website:
First you type the surname of grandfather X and copy to excel all towns where the surname is. Then you do the same with grandmother Y. Then you arrange the towns in alphabetical order and compare the towns. Your ancestral town should be the one where you see surname X and surname Y

