Looking for information about John Corkan [Corkin(s), Corken(s)] and his wife Mary Cannell.
They married at Jurby, May 28, 1803. Mary was born about 1780, and, according to her grave inscription, died in Mentor, March 18, 1859, age 79yrs 6m “Mary Corkins wife of John”.

No evidence that John emigrated and haven’t been able to locate a passenger list, but also haven’t found a burial for a John Corkan in Jurby. I don't find them in 1840 US census, but there are land transactions in Lake County, Ohio in 1834 and 1836. Mentor County Deeds before 1841 list two deeds to Corkins: June 20, 1834, Levi Bliss to John Corkin Vol 19:p. 216 Mentor; June 3, 1836 Levi Bliss to William Corkan Vol 22; p. 551 (Not sure, possibly these two deeds are to John and Mary’s sons, John and William.)

1850 Mentor census # 185: Mary Corkins 70 IOM; Mary 33 IOM

Children of Mary Cannell and John Corkin: baptized at Jurby

i. John Corkin was baptized December 26, 1806, and died at Painesville, September 96, 1896. He married, at Mentor, December 22, 1836, Julia Ann Albry. John Corkin lived in Painesville, Ohio, in 1860 and 1870 census, but no sign of Julia.
ii.William Corkan was baptized May 17, 1810.
iii. Mary Corkan was baptized December 19, 1813. Is she the Mary Corkin who married November 18, 1850, Theodore Valleau, Jr.? (Lake County Marriage records) and died in Mentor February 20, 1884. age 69. Her death record states she was born IOM. Theodore son of Theodore and Liddi (Loveless) Valleau, born at Fishkill, New York, January 26, 1827, and died of pneumonia, in Mentor, April 9, 1888, age 59. [If he was born 1827; and she, 1813, there was quite an age difference.
iv. Eleanor Corkin was baptized November 10, 1816.