Patrick was one of ten children to Michael McLaughlin (b. 1816 - d. 2 Mar 1898 Tamnagh, Banagher, Derry, Ireland) and Alice WALSH McLaughlin (b. 1826 - d. 24 Nov 1901 Tamnagh, Derry, Ireland). Our great grandfather Patrick McLaughlin's siblings were, including Patrick: Denis McLaughlin (1848–1914); Michael "Mick" McLaughlin (1850–1939); Mary McLaughlin McLaughlin (1851– ); Bridget McLaughlin (1853–1897); Patrick McLaughlin (1860–1926); James McLaughlin (1861– ); John McLaughlin (1862– ); Edward McLaughlin (1863–1945); Thomas P McLaughlin (1864– ); Bernard Mc Laughlin (1866–1937). Both Patrick and his younger brother Bernard died in Philadelphia, PA, USA.
We are aware that both Mary MCLAUGHLIN McLaughlin and Thomas P. McLaughlin were wed and had children. Six of Six siblings with Ancestry DNA tests have DNA matches with descendants of both Mary and Thomas P.
Mary MCLAUGHLIN McLaughlin and her husband James had Annie, Patrick, Bernard and Michael whereas Thomas P. and his wife Bridget had children Mary Alice, Michael and Bridget Jane.
There are many descendants of Patrick McLaughlin and his wife Annie, plus there seems to be many McLaughlin relatives in the U.S. where we are not sure of the relationship, but we suspect our 2nd great grandfather Michael McLaughlin was from a large family. Michael's parents are not known.