I checked the marriage for Robert James Haslett to Jennie Gordon that aghadowey mentioned and it had the following details:
Robert James Haslett, age: 38, born: Londonderry, Ireland, bachelor, father: Thomas Haslett, mother: Mary White
Jennie Gordon, age: 25, born: Belfast, Ireland, spinster, father: Hugh Gordon, mother: Jane Meek
There were married 27 Nov 1915 in Toronto.
I found the following entries in the Drouin Collection:
Norman Haslett, son of Robert James Haslett and Jennie Gordon, born 1 Sep 1922 and baptised 12 Nov 1922 (Montréal - Anglican Saint John the Evangelist)
Phyllis Haslett, daughter of Robert Haslett and Jennie Gordon, born 11 Aug 1920 and baptised 12 Mar 1922 (Montréal - Anglican Saint John the Evangelist)
Robert James Haslett, son of Robert Haslett, furniture finisher and Jennie Gordon, born 11 Feb 1917 and baptised on the 9 Sep 1917 (Montréal - Methodist Dlelorimier)
Myrtle Haslett, daughter of Robert Haslett and Jennie Gordon born 15 Feb 1919 and baptised 8 Aug 1919 (Montréal - Methodist Dlelorimier)
I think I see where the family legend came about. There is an entry in the Drouin Collection regarding the burial of Thomas Haslett, husband of June Gordon (it looks more like June than Jennie to me). He died 3 Jun 1915 and was buried 26 Jun 1915 in Montreal. I couldn't find any reference to their marriage or any children.
If you PM me your email address I can send you some information.