Anna,
Here’s Frank’s marriage certificate which tells us his father was Robert McLaughlin, a farmer, and also that Frank was born 13.11.1892.
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1929/09054/5275861.pdf
That then leads to this birth in Golandun:
https://civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1892/02326/1870682.pdf
Family in 1901. The precise townland is Golandun (Dolan):
http://www.census.nationalarchives.ie/pages/1901/Tyrone/Killeter/Golandun__Dolan_/1723587/
1911:
http://www.census.nationalarchives.ie/pages/1911/Tyrone/Killeter/Golandun__Dolan_/853497/
Probably Frank in 1911:
http://www.census.nationalarchives.ie/pages/1911/Tyrone/Killeter/Crilly_s_Hill/853488/
Parents marriage 1872:
https://civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1872/11296/8143709.pdf
Some probate abstracts for the family:
McLoughlin Jane of Golandun Dolan Killeter Strabane county Tyrone widow died 26 January 1940 Administration Londonderry 3 November to Jeremiah McLoughlin farmer. Effects £461 18s. 3d.
McLaughlin Jane of Golandun Killeter Strabane county Tyrone spinster died 17 December 1945 Administration Londonderry 15 October to Jeremiah McLaughlin farmer. Effects £43 9s. 3d
McLaughlin Patrick of Golandun Killeter Strabane county Tyrone farmer died 5 September 1949 Administration Londonderry 1 October to James McLaughlin farmer. Effects £770 1s. 5d.
McLaughlin, Catherine of Golandun Killeter Strabane county Tyrone spinster died 20 April 1951 Administration Londonderry 2 June to Jeremiah McLaughlin farmer. Effects £102 10s. 11d.
McLaughlin, James of Golandun Killeter Strabane county Tyrone retired merchant died 7 August 1964 Administration Londonderry 8 September to Francis McLaughlin retired merchant. Effects £3646 16s.
McLaughlin, Elizabeth Josephine of Golandun Killeter Castlederg county Tyrone spinster died 4 December 1964 Administration Londonderry 18 February to Francis McLaughlin retired merchant. Effects £620 16s.
All the above died intestate. So no wills, but there should be probate files in PRONI in Belfast (when it re-opens).
The farm was the entire townland of Golandun (Dolan) (447 acres). In Griffiths Valuation in 1860 it was being run by Robert McLaughlin in partnership with Daniel McMenamin.
http://www.askaboutireland.ie/griffith-valuation/index.xml?action=nameS…