Hi Brendan
Jim Herlihy's DMP List shows five O'Donoghue/O'Donohoe entries (page 198):
[Name, DMP Reg. No., Year of Birth, Native Parish, Native County]
O'Donoghue, Daniel, DMP 10106, born 1878, Castlegregory, Co. Kerry
O'Donoghue, Edward, DMP 5342, born 1836, St. Peter's, Queen's County
O'Donohoe, Edward, DMP 5403, born 1835, Mountmellick, Queen's County
O'Donohoe, Michael, DMP 7773, born 1854, Killanerin, Co. Wexford
O'Donohoe, Thomas, DMP 9165, born 1862, St. Mary's, Co. Kilkenny
The Herlihy RIC List is a larger database; unfortunately it only gives the name of the member and his RIC Reg. Number - no information on birth year or county of origin. From the Reg. Number it is possible to estimate the approx year of entry, however.
There are 37 O'Donoghue/O'Donohoe entries (page 370-371) in the Herlihy RIC List.
There is only one Morty O'Donoghue/O'Donohoe:
Morty O'Donohoe, RIC Reg No. 26605 [Nov 1859-Oct 1861]
There is only one Daniel O'Donoghue/O'Donohoe:
Daniel O'Donoghue, RIC Reg No. 36755 [Oct 1868-Oct 1871]
Daniel O'Donoghue, RIC Reg No. 41854 [Feb 1875-May1877]
The data in [] brackets is the date range within which the RIC Reg No. falls.
I hope this helps.
best regards
Gerry McMahon