Can one use the phrase "our own" while describing a person or a place. For example:
Our own Charles Dickens has written novels on industrial revolution.
Or
Our own Mr. Gandhi is a symbol of non violence.
Or
Our own Bombay is a crowded city.
Yes you can. Just note that it makes it sound as if the person in question is familiar to you or in the same group as you.
Edit
Also, in my opinion, it sounds slightly formal as if they are familiar as an associate rather than as a close friend.
Example
Speaking to a club: "Our own John Doe has achieved x and y. applause"