John Kelly, Bridget Kelly and Mary Kelly of early 19th century Glin

I am searching for information on the origins of my g3 grandmother Mary Kelly (~1812-1854) of Glin, Limerick.

Her tombstone says that she was the daughter of John and Bridget Kelly of Glin, Limerick. Mary immigrated, probably to the Boston area, sometime in the 1830s. She married Michael McDermott (probably of Roscommon), and in 1840, they had a son Thomas in the Wisconsin Territoy, and then finally settled in Galena, Illinois the following year. Mary (nee Kelly) McDermott died in Galena at the age of 42.

The name John Kelly appears twice in the 1830 Tithe Applotment books - once in Caheragh (Cahara) and once in Tullyglass. The name appears four times in the 1852 Griffith's Valuation - twice in Caheragh, once in Tullyglass and once in Killacolla/Barker (on Mill Street). I see that the Parish records go back to only 1851, unfortunately. 

I am not sure if Mary Kelly had any siblings - thus far, her trail is very scant in America. But, perhaps the names will match with someone's research and we can put our heads together. You can reach me here or at: thomas.lloyd.mcdermott@gmail.com

Thank you!