I found this info when retrieving unrelated family data.

Marriage Reg: #005544
Date: Tuesday, Nov 8th, 1879
Groom's Name: Andrew Wallace
Age: 22
Residence: Mountain
Born: Ontario
Status: Bachelor
Occupation: Farmer
Religion: Presbyterian
Father: Thomas Wallace
Mother: Mary

Bride's Name: Mary S. Brown
Age: 17
Residence: Mountain
Born: Ontario
Status: Spinster
Religion: Presbyterian
Father: William Brown
Mother: Catharine
Witness: Joseph Wallace
Witness: Mary Wallace
Place: In the Rectory, Kemptville, ON
By: Licence - Rev. A. Spencer

1881 Census Place: Mountain, Dundas, Ontario, Canada
Source: FHL Film 1375864 NAC C-13228 Dist 102 SubDist E Div 2 Page 9 Family 39
Sex Marr Age Origin Born Relg Occ
Thomas WALLACE M W 72 Irish IRE Presby Farmer
William WALLACE M 27 Irish ON Presby Farmer
John WALLACE M 19 Irish ON Presby Farmer Son
Mary WALLACE F 15 Irish ON Presby
Andrew WALLACE M M 24 Irish ON Presby Farmer
Mary WALLACE F M 18 Irish ON Presby