The William Lumsden I believe you are looking for was born Wexford, Ireland Jan 10,1811. Married in Cobourg,Ontario (south of Peterborough) in 1846. Died Hamilton,Ontario, Feb 2,1883. Buried Hamilton Cemetery. William and Francis Hayden had 11 children. William Godfrey (my GGG Grandfather)George Edward, Charles Alexander,John Augustus, Anna Frances, Frank Albert, Paul Edwin,Frederick Hayden, Kate Ida,Grace Alexander and Victoria Mary.
Graham Lumsden Ontario
PS..Frances Hayden was born Apr 27,1822 at Coldsprings,Ontario. Died Oct 3,1894. Buried Hamilton Cemetery.