Death of Nancy Leacock, Dec 25, 1859

[Peggy13]

We have a letter written by Ann Leacock in 1860 to her son in Ohio. Ann says Aunt Nancy "went underboard" on Christmas Day 1859. But I can't find her death. Not sure if Nancy was born Leacock or married a Leacock. Ann lived in Carraloon but don't know if Nancy did as well. Ann was supposedly born 1791 Desertmartin and Nancy abt 1790. Any thoughts on finding Nancy's death?
Peggy