John M. Smith died in 1947.
John M. C. Smith died in 1923.
John M. Smith was born in 1872.
John M. C. Smith was born in 1853.
John M. Smith has written: 'Renovation of municipal wastewater by reverse osmosis'
James M. Smith died in 1898.
Otis M. Smith died in 1994.
Hyrum M. Smith died in 1918.
George M. Smith died in 1962.
M. G. Smith died in 1993.
Mr. John M. Smith and Dr. Mary F. Smith is correct, or John M. and Mary F. Smith, or Mr. & Mrs. John M. Smith. One should never become awkward in usage for the purpose of being politically correct. It simply draws people's attention unnecessarily.
John Smith died on 1612
A. J. M. Smith died on 1980-11-21.