William Smith - abolitionist - died in 1835.
William Smith - abolitionist - was born in 1756.
William Morgan - abolitionist - died in 1890.
Gerrit Smith did not fully agree with the abolitionist views of the others mentioned. Smith supported the abolitionist cause but did not always see eye to eye with prominent figures like William Lloyd Garrison and Harriet Beecher Stowe.
William Pitt Smith died in 1796.
Bernard William Smith died in 2011.
Samuel William Smith died in 1931.
William Smith-Masters died in 1937.
William Wensley Smith died in 1955.
William Rudolph Smith died in 1868.
William Osborne Smith died in 1833.
William Russell Smith died in 1896.
William Collingwood Smith died in 1887.