* His approximate birth year or lifespan: This would help narrow down searches in medical school records.
* His specialty (if known): Knowing his area of medicine might help pinpoint specific universities he may have attended.
* The country or region in Europe where he studied: This would significantly narrow the search.
Without more context, it's impossible to answer why a hypothetical Dr. Fletcher James Johnson Jr. might have attended medical school in Europe. Many reasons exist, such as:
* Specific educational opportunities: A particular program or research opportunity might have only been available in Europe.
* Family connections: He might have had family in Europe, making it easier to study there.
* Financial considerations: Tuition or living costs might have been lower in certain European countries.
* Political or social reasons: Circumstances in his home country might have made studying abroad more appealing or necessary.
To find this information, you'll likely need to conduct genealogical research or search archival records of European medical schools.