When was Bartholomew born?
Was Daniel Dineen born 1857 Merthyr one of theirs, if so his birth is registered but mothers maiden name shown as Leary

There is a Johanna born 1853 Merthyr same mothers name but not Dineen.
Charles born 1854 Merthyr has same mothers name (Leary) and fathers name Dineen.
Margaret born 1862 Merthyr has same mothers name but not Dineen.
Do you think these are your births despite Leary not being Lynch?