No, a widow generally remains as "Mrs".
It is always a sensitive situation when you need to address a widow. In order to show her respect you can address her as Ms.
Mrs is used to address a widow.
Yes, it is proper to address a widow by her last married name.
to detect and address potential problems
A Widow.
Formally, Maestro [my-strow] .
You can address the envelope to a widow as: Mrs. Jane Doe (Doe would be her husbands surname) or, you could write Mrs. J. Doe on the envelope. Even though she is a widow she still has the surname of her husband until she either decides to change it to her maiden name or remarries.
When addressing an envelope to a recent widow, it is customary to write the person's name starting with the title "Mrs.". Just because a woman is a widow does not mean that a woman is not still married.
The same as you normally would. Her status is still Mrs. ?
Do NOT, repeat NOT, use the widow's first name. You address the envelope just as though the husband were still alive. Example: Mrs. Robert Smith While that is the formal way address, in today's society, many women prefer to be addressed with their own first name. Neither is considered incorrect.
Informally: By her first name e.g. Bunty Formally: Princess Bunty