***** NOT A TEACHER *****
1. "I had an uncle in Germany, from whom I inherited a bit of money."
a. That is super formal and very unnatural.
2. "I had an uncle from Germany, whom I inherited a bit of money from."
Congratulations! You know that the objective form should follow a preposition.
3. "I had an uncle from Germany, who I inherited a bit of money from."
a. I believe that it is accurate to say that most Americans find #3 the most natural (and the easiest to pronounce).
Student or Learner