Have discovered that 'My' Robert Lyons died on 11 April 1872 and his wife Mary, two days later and both buried in Drumnakilly.
The Killyclogher Robert of 1886 is a different family.
Mary's surname was either Johnston or Houston (could look similar if people trying to decipher handwriting.
Their children:
Robert Lyons & Mary ?Huston or Johnston
Children:
1. James c 1840. He married Isabella Caldwell on 22 Mar 1866 at Omagh 1st Pres. He died 14 Dec 1878 aged 38 and is buried with his daughter Annie Mayne aged 2 and his wife, Isabella who died 25 Feb 1919, aged 86 and they’re buried in Drumakilly graveyard
2. Robert 1842. Married Ellen McFarland at Omagh First Presbyterian on 22 Feb 1872 (Drumragh parish). Had son Robert Andrew on 12 April 1873 Omagh. Mary 15 August 1874. Died 10 May 1907 in Drumnakilly (married farmer, 65, pneumonia, son Robert A present at death)
3. Letitia 1844 - married Joseph McIver of Bracky and lived and died there in 1898
4. Andrew 29 Dec 1849 (a 20 year old of this name dies in Drumnakilly in 1869) - baptised 11 Jan (must be 1850). Died 3 Aug 1869 and Drumnakilly stone says it was erected by his parents RL and Mary
5. Mary 16 Nov 1850 Cloghfin, Edenderry. Baptised 4 Dec 1850. Married Alexander Smith on 18 April 1876 in Drumnakilly church? Witnesses: William Smith and Joseph McIver (signed I think) If so daughter, Jane born 30 April 1877 Copney and son Christopher Lyons, 29 Mar 1882 according to his US death record, 29 June 1950 (Illinois, he was a gardener).
But I've love to know where Mary adn Alexander Smith ended up - haven't found them