This is a transcript of this Irish marriage the image is not available online:-

Party 1
Name William Henry Lyall
Age Full
Address Soldiers Home, King St
Occupation Soldier
Civil Status Never Married
Father's Forename John
Father's Surname Lyall
Father's Profession Farmer
Signature William Henry Lyall

Party 2
Name Mary Ellen O'Connor
Age Full
Address 118 Shandon St
Civil Status Never Married
Father's Forename Terence
Father's Surname O'Connor
Father's Profession Undertaker
Signature Mary Ellen O'Connor

Marriage Information
Date of Event 08 August 1906
Marriage Solemnised At
Address Cathedral of Cork
Solemnised According To the Rites and Ceremonies of the Roman Catholic Church
Solemniser Forename Martin
Solemniser Surname Murphy CC
Witness
Witness 1 Patrick J Lynch
Witness 2 Hannah Goggin
Registrar Edward Cantillon Dep
Registration District/Office Cork Urban No. 4
Registration SR District/Reg Area Cork
Registration County Cork
Date of Registration 25/08/1906

Another thread on this family found that William was most likely the illegitimate son of William Christian and Catherine Sharpe. Catherine was a witness at the marriage of John Lyall and Catherine Robina Ellison who adopted William:-

www.isle-of-man.com/genealogy/messageboard/index.pl/page/28/md/read/id/563271