As already mentioned above the name Bartel is fairly popular in Poland (there are as much as 963 people bearing this name; the data are from 1990), but is is not a point of our analysis as there are lots of ways in which it might have arisen in a way that has nothing to do with Bartels. The map shows the spread of the name and shows Poland split into 49 voivodships (since 1999 the number of voivodships was reduced to 16).