This is likely him. The names Daniel and Donald seem to be interchangeable with Scots.
Donald McGillvray, 24, b Osnabruck, living Monck, labourer, s/o Miss McGillvray, married Jennet Ann Christie, 22, b Kenyon Tsp, living Apple Hill, d/o John Christie & Jennet Miller, witn: Miss McGillvray of Monkland and Mrs John West of Avonmore, 20 June 1893, Avonmore Ont. Registration # 011480.
Note at the bottom of registration says:
The bridegroom is an illegitimate child and I cannot find anything about his father, all the information I can get is that the mother's name is McGillvray. Signed F A Mitchell [he's the minister that married them].
On 1901 census his birth is given as 1 June 1863, aged 37. Janet's is 28 Dec 1873, aged 27.
Children Lawrence 29 March 1892, Fredric 19 April 1896, Murdock 29 Mar 1898 and Annie L 5 Dec 1900.
Lawrence's birth rego says he was born 29 March 1895, not 1892. s/o Daniel McGillvray and Janet Ann Christie.
This is a Declaration of Birth given my his mother 2 Jan 1948 at Cornwall.
Frederic's birth rego says he was born 19 March 1895, s/o Donald McGillvray & Janet A Christie.
Another child - John Roderick 5 Aug 1903, s/o Donald McGillvray & Janet A Christie.
I cannot find them on 1911 census but have a look on www.automatedgenealogy.com
They must have stayed in Stormont as Janet gave the declaration of birth there in 1948 and Laura McGillvray married Russell Taylor in 1926 at Stormont.
Lawrence was married to Irene Mary Dennis in Cornwall 1 June 1921.
WW1 Attestation Papers
Lawrence Duncan McGillvray,, electrician, of Lancaster Ont, b 29 April 1893, mother Janet McGillvray of Lancaster Ontario. Previously served 3 yrs 59th Regiment and 3 mths in 58th Regiment. signed up Cornwall 22 Feb 1914.
This seems like a more reasonable birth date for Lawrence.
I cannot find them anywhere on 1911 census. Have tried on both available sites and have tried under both first and last names. No luck. They never seemed to move from Stormont.
The ages for the adults are not very consistent.
Get Daniel/Donald's death registration and it may have his mother on it.