Is this the entry? Posting it here because for some reason I am having trouble with the image.
Do you have a source for the birth in Tubber, and what info does it give?
Name JOANNES BRISCOE ESTHER MULLIN
Address 23 LUKE GT 22 LIBERTY LANE
Occupation N/R N/R
Father ROGER BRISCOE THOMAE MULLIN
Mother CATHERINAE FOY MARIAE LOWREY
Priest JOANNES RYAN
Witness 1 MICHAEL CLURK
Witness 2 MARIA A MOORE
Area - DUBLIN (RC) , Parish/Church/Congregation - HARRINGTON STREET
Marriage of JOANNES BRISCOE of 23 LUKE GT and ESTHER MULLIN of 22 LIBERTY LANE on 8 September 1878
Not saying in anyway that this is your family, but Briscoe is a rare name in the midlands, so might be of general one name study interest:
http://www.offalyhistory.com/articles/87/1/A-History-of-Sragh-Castle/Page1.html1800: An Edward J. Briscoe was the High Sherrif of Westmeath for one year. He lived at Riverdale which is not that far from Tubber.
PM