"Obsolete," but still in use

[Barnhart]

I remember working in my father's office with my brother and father where
one native speaker (?) of British English would call my father "Mr.
Barnhart" but my brother and I were called "Mr. Robert" and "Mr. David".
But I suspect that's different.  Would it still be that way or is (was)
that decidedly "old-fashioned"?

Regards,
David

barnhart at highlands.com

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