Did these M*A*S*H characters have more than one actor?

As a result of changes made after the pilot episode or because appearances were stretched far apart, there were several characters that were played by more than one actor on M*A*S*H.

We know characters like Hawkeye, Radar and Hot Lips had the same respective actors play those roles throughout the series, but what about characters who had far less screen time?

Do you know if the following characters were ever portrayed by more than one actor?

1. 1. Was the character of Father Mulcahy ever played by anyone other than William Christopher?
      
      • Yes
      • No
   2. Was Col. Potter ever played by more than one actor?
      
      • Yes
      • No
   3. Was Henry Blake ever played by more than one actor?
      
      • Yes
      • No

1. Was Rosie ever played by more than one actress?
   
   • Yes
   • No
2. Col. Sam Flagg had several aliases, but was the character played by more than one actor?
   
   • Yes
   • No
3. Was Lt. Nurse Kellye ever played by more than one actress?
   
   • Yes
   • No
4. Was Lt. Nurse Ginger Bayliss ever played by anyone other than Odessa Cleveland?
   
   • Yes
   • No
5. Was Donald Penobscott, Margaret’s husband, ever played by more than one actor?
   
   • Yes
   • No
6. Was Maj. Frank Burns played by anyone other than Larry Linville?
   
   • Yes
   • No
7. Was Maj. Gen. Bartford Hamilton Steele played by anyone other than Harry Morgan?
   
   • Yes
   • No
8. Was Ho-Jon ever played by anyone other than Patrick Adiarte?
   
   • Yes
   • No
9. Was Klinger ever played by anyone other than Jamie Farr?
   
   • Yes
   • No
10. Was Igor Straminsky ever played by more than one actor?
    
    • Yes
    • No
11. Nurse Meg Cratty appeared twice in M*A*S*H, two seasons apart. Did more than one actress portray this character?
    
    • Yes
    • No