I found these listings for male CRANSTONs in the General Register Office death index:

CRANSTON, Charles, died 1869, Armagh [County or District] age 75 [b ca. 1794], Register 6:53.
CRANSTON, Henry, died 1872, Armagh, age 80 [b. ca. 1792] Register 16:45
CRANSTON, William, died 1873, Dungannon, age 78 [b. ca. 1795] Register 11:341
CRANSTON, James, died 4th quarter 1881, Armagh, age 84 [b. ca. 1797] Register 1:48
CRANSTON, William, died 1865, Armagh, age 60 [b. ca. 1805] Register 6:66

If you can connect to one of these folks, please contact me for more information.