Mrs. Jones has been selected for the post principal.
This sentence grammatically seems correct. But what if Mrs. Jones is unknown to speaker?
Than what should be the correct form to say a name of person who is known to speaker A Mrs Jones or Some Mrs. Jones or The Mrs. Jones?
And one more thing here Jones is person's last name. But if change Jones into first name for example Mr. John then does it effect my question? I mean in that case also should we use A Mr. John and Some Mr. John or The Mrs. Jones ?(if this is correct)
Best Answer
Just to be clear: In general, you do not use an article with a proper name in English.
Where you do put "a" before a proper name is when you want to indicate that all you know about the person is his name. If someone you know who is named Bob Smith is selected for the job, then you say, "Bob Smith has been selected." If you read the name in some sort of announcement and have no idea who this person is, then you might say, "Someone named Bob Smith has been selected", or "A Bob Smith has been selected." Often in that case you put the name in quotes. This would also apply if there are several people with the same name and you are not sure which it is. "Who was selected?" "A Bob Smith. But I'm not sure if it's the Bob Smith from the English Department or the Bob Smith from the Math Department."
You almost never use "the" in front of a person's name. If you do it's usually when you are specifying just which of several people with similar names you mean. Like in my example above about the two Bob Smiths. Or if you want to make clear that you mean the famous person by this name. Like, "We got THE Bill Gates to speak at our conference", meaning, the actual famous person of that name, not just someone else with a similar name.