Well... where to start. I know a whole ton of my family history.
My family has its roots in the Netherlands, and at some point during the Reformation they joined an Anabaptist group called the Mennonites, named for their founder, Menno Simons. Due to persecution from Catholics, and, to some extent, other protestant groups, they moved en-masse into Prussia, where they exchanged their native Dutch for the Low German of the area. There they stayed for quite a while, until Catherine the Great offered them land in Russia. They accepted (due to their military exemption rights being removed in Prussia (Mennonites are pacifists)), and settled down in what's now the Ukraine. Then, during WWI, came the Russian Revolution, and, with it, Nestor Makhno's anarchists, who raided Mennonite land, due to a grudge that Makhno carried against them. Around that point, my Dad's Dad's side of the family emigrated to Canada and settled down on Vancouver Island. Following that, came collectivization, and the criminalization of religion.
During collectivization, my Mum's paternal grandmother, who was, by all accounts, a rather feisty woman, got rather annoyed with the communist way of life. One day, she said "They say I have a cow at the collective farm, but I never see any milk," and up she got and brought home "her" cow. This earned her family a one way ticket to Siberia. Eventually they got back, due, in part, to the purchase of a large bottle of vodka, but that is another story. Ask me later.
At that point, the second world war was going full force, and the Germans had fought their way into the Ukraine. The Mennonites (not knowing about Nazism or Holocaust) rejoiced, because these people were going to let them practice their religion again. (Unfortunately, they did not respect the Mennonite Pacifism, and drafted the men into the army. My Mum's grandfather (just recently back from Siberia) very nearly fought in the war, but managed to bribe the camp surgeon into not giving him a clean bill of health, and came back to his family by coal train).
Then the Germans made the same mistake as Napoleon, and were forced to retreat, taking the Mennonites with them, considering them (as German speakers) to be German citizens. After the war, the rest of my family emigrated to Canada as well, and here we are.
*exhales*