Walter Robert Smith died in 1942.
Robert Smith - bishop - died in 1801.
Robert Smith - cricketer - died in 1899.
William Gardner Smith died on 1974-11-05.
Robert FitzRoy died on April 30, 1865 at the age of 59.
Assuming you're talking about the author & novelist - as of today - he is very much alive.
Walter Robert Smith was born in 1872.
Walter Smith Cox died in 1902.
Walter Chalmers Smith died in 1908.
Walter Campbell Smith died in 1988.
Walter Mackersie Smith died in 1906.
Robert Walter Steel died in 1997.
Robert Walter Doyne died in 1916.
Walter Robert Bown died in 1903.
Samuel Walter Johnson Smith died in 1948.
John Walter Smith died on 1925-04-19.
Robert Walter Weir died on 1889-05-01.
Robert Walter Rolf died on 1942-09-06.