tree owner might be able to help ??
https://gw.geneanet.org/shirleyh?n=armstrong&oc=4&p=thomasthis might be of interest - BORN IN IRELAND
William Robert Armstrong - in Halfwhistle
1724 : Birth - Magheraculamoney, Co Fermanagh, Ireland
--- : Occupation - Scotscoultard, Haltwhistle
Farmer
29 May 1754 : Marriage (with Elizabeth Robinson or Kirk) - Haltwhistle, Northumberland, England.
15 July 1802 : Death - Scotscoltherd, Haltwhistle, Nhumb., Eng.
17 July 1802 : Burial - Haltwhistle, Northumberland, England.
I wonder if the Armstrong family of Halfwhistle went over to Ireland to fight with the British troops ?
Thomas was born in 1712 in Halfwhistle - before William was born in 1724 in Ireland