Here's what we know:
* St. George and the Dragon was a popular subject for medieval and Renaissance plays. These plays were often performed in public spaces, like town squares or market places.
* Masked actors were common in many theatrical traditions. However, their use in St. George and the Dragon plays is not specifically documented.
* Door-to-door performances were a common way for traveling entertainers to make money. This included jugglers, acrobats, musicians, and storytellers. However, evidence of masked actors specifically performing St. George and the Dragon in this way is lacking.
Possible explanations for the lack of evidence:
* The practice was not widespread. It's possible that masked door-to-door performances of St. George and the Dragon were a rare occurrence, not documented in surviving records.
* The plays were primarily performed in public spaces. Public performances were more common and better recorded than door-to-door performances.
* The use of masks was not a defining feature of these plays. Many representations of St. George and the Dragon were performed without masks.
In conclusion, while the idea of masked actors performing St George and the Dragon door-to-door is imaginative, it's not supported by historical evidence. The combination of elements is likely a modern interpretation rather than a historical reality.