1861 census Edwardsburgh Grenville
SELLECK
Daley, farmer, 52
Jane, 52
Elizabeth, 21
Allan 18
Memer, 10

There are no family separations on this census so either living with them or next door is:
Ellis, blacksmith, 28
Ann, 24, b Ireland
Margaret, 1
John, 1
All born Upper Canada unless otherwise given.

A Daily Selleck is buried Johnston/Common Cemetery Edwardsburgh Grenville. Reference: L&G 83 4 1
There is also a Daily buried Maynard [old section] Augusta Grenville
Also a Jane Selleck bured Maynard Augusta Grenville.
http://ocfa.islandnet.com//
If you contact the cemetery they can give you more information.

I do not see any of your Sellecks on 1871 or 1881 census.