May 31, 2003:

There were several (related?) DARCY families who were 
in Bytown by 1830. 
Many of them married into Osgoode Township families. Here are two 
examples from the Notre Dame Records of Ellen Paul:

31 Dec 1843
Baptism of Thomas, born 8 November of the marriage of James Darcy, farmer of Osgoode, and Mary ?
Witnesses: John Daley & Mary Nolan

6 Oct 1843
(My GGGrandparents ... Al)
Baptism of John, aged 5 mos., son of Lawrence Burns and Margaret Doyle of Chelsea
John Darcy & Margaret Gunn

Adjacent to the O'Rourke farm in the 1881 census:

1881 Census Place:	Osgoode, Russell, Ontario, Canada
	Source:	FHL Film 1375865  NAC C-13229  Dist 104  SubDist G  Div 1  Page 56  Family 244
	Sex	Marr	Age	Origin	Birthplace
Thomas DARCY	M	M	48	Irish	Ontario
	Occ:	Farmer	Religion:	Catholic	
Bridget DARCY	F	M	40	Irish	Ontario
			Religion:	Catholic	
James DARCY	M		11	Irish	Ontario
			Religion:	Catholic	
Mathew DARCY	M		10	Irish	Ontario
			Religion:	Catholic	
Martin DARCY	M			Irish	Ontario
			Religion:	Catholic	
	Born:	U	
Patrick DARCY	M			Irish	Ontario
			Religion:	Catholic	
Tehorfield DARCY	M		6	Irish	Ontario
			Religion:	Catholic	
Mary Ann DARCY	F		4	Irish	Ontario
			Religion:	Catholic