O'Flahertys of Lisdonagh

Does anyone have any information on the parents of the John O'Flaherty who lived at Lisdonagh House in the early-mid 1800's?   He married Mary McDonnell, sister of James Joseph McDonnell and was the father of:
Bridget (m Edward Kelly)
Esme (m. Edward Deane)
Maria (m Patrick Skerrett)
Belinda
Anne Mary (m John Kilkelly)
Thomas (m Josephine Rean?)
Dominick
Martin Francis O'Flaherty (m Mary Frances Barbara O'Gorman)
- all born 1790s through 1820.

In Mary Murphy's book about Eva O'Flaherty (Martin Francis O'Flaherty's daughter) she states that John's parents were Bryan O'Flaherty and Mary Burke.  

But... in Ross Abbey there is a  crypt  which  has the inscription "To the Memory of Bryan O'Flaherty of Beagh 3rd son of John of Lettermore Connamara who died Mar 1832 aged 91 and his wife Bridget daughter of Thomas Hussey of Aughelard Castle who died June 1818 aged 60 and their sons Martin of Blake Hill who died March 1835 aged 60 and Thomas who died 1845 aged 72"   I do know that several members of that family were buried at Ross Abbey, and the ages fit.    Was this a different Bryan O'Flaherty? Or was  he married twice? Or...?

Any information would be very much appreciated.