Whilst much of the 1831 census of Ireland was destroyed we are fortunate that most of the records for Londonderry survive. Family historian Bill McAfee has transcribed the records and provided internet access to these, for which we are grateful.

An analysis of the records for Kilkie/Kilkey and Kilky shows only one (or two) records, whilst a similar review for Gilkie/Gilkey/Gilky gives a further 8 individuals. The complete list of records is given below:

surname	forename	barony	parish	townland
Kilken	Thomas	Tirkeeran	Clondermot	Drumahoe
Kilky	James	Keenaght	Tamlaght Finlagan	Mulkeeragh
Gilkey	John	Keenaght	Dungiven	Carn
McGilkey	Thomas	Keenaght	Dungiven	Carn
Gilkey	Widow	Keenaght	Tamlaght Finlagan	Drumacarney
Gilky	Nancy	Keenaght	Tamlaght Finlagan	Drumballydonaghy
Gilky	Thomas	Keenaght	Tamlaght Finlagan	Drumballydonaghy
Gilkey	Isaac	N. W. Liberties	Templemore	L/Derry, Wapping Lane
Gilky	William	Tirkeeran	Clondermot	Gortgranagh
Gilky	William	Tirkeeran	Clondermot	Tullyally Lower

A comparison between these individuals and those existing in the later Griffiths valuation (1859) shows some similarities as would be expected.

Note again that in this early period G seems preferable to K in spelling.