There are other O'Neils but you had asked only about Richard.
There is a Richard in St. Raphael's who buried his wife Catherine MacDonell at age 29 on Sept 25 1818 and she was the daughter of Ranald and Mary MacDonell.
There is a Patrick son of Richard married to Bridget Cowan 05 Nov 1844. Richard's wife is Mary Donovan.
There is a Catherine born and died 12 days later daughter of Richard and Mary Kerevan, Kenyon 1st Lot 37.
There is a Mary Kerevan buried 29 May 1853 Kenyon 1st Lot 28 wife of Richard O'Neil. She the daughter of William Kerevan and Margaret Finlan.. She was 37 years of age.