Townland puzzle

[Nic Holmes]

Please could anyone help with the location of my great grandmother Anne Cowan on her first marriage in 1864. Her residence is recorded as Drumkerin, Donaghendry but I cannot find a Drumkerin townland in Donaghenry, or anywhere in Tyrone.
The marriage is at the meeting house in Newmills, Tullynishkin. Her father Thomas is listed as  a farmer but cannot trace him or any Cowans in Griffiths for Donaghenry

Many thanks for any help with this
Nicola
https://www.irishgenealogy.ie/view/?record_id=cima-3016320

[shanreagh]

Welcome to Rootschat Nicola!

I wonder if the townland has been slightly mispelled and it is Drumkern.

https://www.townlands.ie/tyrone/dungannon-upper/ballyclog/ballyclog/drumkern/

Drumkern is bounded on the east by Oghill, Ochill townland on the marriage certificate, where  William Henderson is from.

https://www.townlands.ie/tyrone/dungannon-upper/ballyclog/ballyclog/oghill/

ETA When you look at Griffiths there is a Thomas Henderson living there (Drumkern)  in 1859.


http://www.rootschat.com/links/01uib/

[Kiltaglassan]

With shanreagh having found the townlands, here's the OSM for Drumkern townland, with Stewartstown to the west, and the village of Newmills to the WSW (including Newmills Presbyterian Church).
https://www.openstreetmap.org/relation/5397552#map=13/54.56719/-6.68552

..and welcome from me too! 

[Kiltaglassan]

OP,
Since you were online here yesterday, here's some more information about the 1864 marriage.

The marriage is at the meeting house in Newmills, Tullynishkin.

Newmills Presbyterian Church in the townland of Drumreagh Otra (Tullyniskan civil parish).
https://www.openstreetmap.org/relation/5401416#map=17/54.552031/-6.740906

Thomas Henderson farming in both Oghill and Drumkern in 1859 (Griffiths Valuation).
https://tinyurl.com/4ekcxmyk

Old map (1838-1862) of Newmills village with the Presbyterian Meeting House (image attached).