From IGI they are Thomas + Catherine Lewney/Looney m. at Patrick 06 JUN 1858 he aged 24 she 21 (tho I've found in past those ages in Patrick are not always accurate) - there is a Thomas Shimmin born to them bapt German 09 OCT 1859 but entry in IGI has death 08 JAN 1866 so something looks amiss here and indeed Brian's index has a Thomas Shimmin age 6 bur 8 Jan 1866