My family history can be traced back on my dad's side to the mid 1500s. This was 13 generations. Being generous, it takes about 60 generations to get back to the Roman invasion of England and the birth of Christ.
Now, I have no idea when certain languages began, but we have so many very different languages in Europe at the present time. Some are right next door as countries e.g. France and Germany. It is estimated that there are between 5000 and 7000 languages on Earth.
What I find so amazing is that our languages can be so different. OK, until about 100 years ago most people did not move far. Nonetheless, I find it incredible that languages can be so different in so few generations.