you need to search for bmds on
https://www.irishgenealogy.ie/en/ bothe church and state
I started with 1823-1837 Tithes Applotment Books based upon the index work of the Irish Genealogy Hub’ see
http://www.irishgenealogyhub.com/derry/tithe-applotments/desertmartin-parish.php The relevant original books are in the Public Record Office of Northern Ireland (PRONI) Belfast
re arranging by townland my guess is Anagh is for later spelling Annagh
McCristal, Arthur Townland: Anagh Year: 1827
McCristal, Michl. Townland: Anagh Year: 1827
McCristal, Daniel Townland: Cranny Year: 1827
McCristal, Widow Townland: Cranny Year: 1827
McCristal, Bryan Townland: Luney Year: 1827
McCristal, Jas. Townland: Luney Year: 1827
McCristal, Thos., Jr. Townland: Tirgan Year: 1827
McCristal, Thos., Sr. Townland: Tirgan Year: 1827
using one spelling only and arranging by civil parish I start with
1859 Griffiths valuation three sources
1.
https://www.failteromhat.com for quick index.
Mc Crystal James Curr Desertmartin Derry
Mc Crystal James Desertmartin Desertmartin Derry
Mc Crystal Michael Annagh and Moneysterlin Desertmartin Derry
Mc Crystal Henry Brackaghlislea Kilcronaghan Derry
Mc Crystal Anne Drumsamney Kilcronaghan Derry
Mc Crystal Philip Drummuck Maghera Derry
2.
http://www.askaboutireland.ie/griffith-valuation/ for detail and map ref .. 3.
https://www.nidirect.gov.uk/information-and-services/search-archives-online/valuation-revision-books since 1859
Mc Crystal James Curr Desertmartin Derry
map ref 3 A,B
Mc Crystal James Desertmartin Desertmartin Derry
map ref 22 18
Mc Crystal Michael Annagh and Moneysterlin Desertmartin Derry
map ref 21 10 acres and house valued at 5 shillings pa
with patience you should be able to look this homestead up plot 21 runs SW to NE divided up by roads part of one exists today
switching to google modern map the lane , is the second lane branching off eastwards from the A 29 tobermore Rd , north of Knocknagin school the first lane sweeps around to nearly join up with the first. roughly the address is 77 Tobermore road, desertmartin BT45 5LF
switching to satellite view its currently redeveloped you can judge where the Mccrystal home was or is.
3.
https://www.nidirect.gov.uk/information-and-services/search-archives-online/valuation-revision-books since 1859, wil alllow you to find when that Michael left the property after 1859
hoping some of this is new to you
ps when useingbmd search as at top, use all spellings possible woops see how many
https://www.johngrenham.com/findasurname.php?surname=mccristal