You might already have this but there are some of your Quigley's in St. Alexander Cemetery in Lochiel. If the stone was hard to read then the dates might be wrong, so more checking is advisable.
#30 - Quigley
In memory of Owen Quigley died Aug. 8, 1878 aged 61. Also his son, John R. Quigley died Feb. 25, 1876 aged 24 yrs. Erected by his son Charles.
#31 - Quigley
In memory of Charles, son of Owen Quigley of the parish of St. Alexander, who died on 26 Sept. 1853 aged 13 yrs.
Erected by his father
Catherine McDonald wife of John Quigley is buried in St. Finnans, Alexandria. Let me know if you want this inscription.