Searching for Hugh Martin

Hello, I just returned from Ireland. I'm renewing my late mothers geneology research. Would be so grateful for any help getting info on Hugh Martin. The info I have is that he was born in County Cavan. DOB unknown. DOD1830. He married a woman named Elizabeth, also county Cavan. Elizabeth DOB 1802 and DOD 1876. One child John DOB 1825 County Cavan. He married Mary Farrelly (Farley) in 1852. Thank you for reading. Bob