Only son of Hamilton Coslette McMordie.  Hamilton Coslette was born 18 September 1880 of Cork, afterwards of 189 Sheffard Avenue N Toronto, Canada.  He married Rebecca Charlotte, only daughter of Thomas W Magahy of Cork.  They settled in Toronto.
Family Tree, obtained from TN Iain McMordie.
The information was collected by John Andrew McMordie (b.1845). 
Sarah Keers (b. 1873), the second daughter of John Andrew McMordie, added
information while the document was in her possession.  
Other information was added by Major E. C. Mark of Hazelmead
Ewell, Surrey (step brother to Hamilton Coslette McMordie, b. 1880).