Looks like your family came from the townland of Ballymooris, Civil Parish of Kilfintinan, RC Parish of Cratloe whose church records date from 1802 for baptisms & 1822 for marriages. You could try writing to The Parish Priest, Cratloe, Co.Clare, Ireland as I don't think the records have been microfilmed by the Church of The Latter Day Saints. A Roger Kenny was shown to be living in the townland of Ballymooris in the Tithe Applotment Books of 1833 for the parish of Kilfintinan. He was the only Roger Kenny listed for Co.Clare so it's a strong possibility he is your Roger. Check out the Clare Library website genealogy section where you will find lots of genealogy records.( www.clarelibrary.ie
). There is a microfilm copy of the Cratloe parish records 1802-1877 held by the Library and you might get someone from the library to do a look up for you.
Regards from Co.Clare