Hello,
The paid site, Roots Ireland, has the baptismal record for Edward on 17 Dec 1876, residence - Currane, parents - John Gallagher & Nancy Currigan. Sponsors - John Currigan & Catherine Gallagher. I then looked for his siblings, and found the following:
Anne (1868) - parents - John Gallagher & Anne Currigan, residence - Currawn, Sponsors - Brian Patten & Bridget Gallagher, her civil record shows birth in August, but church baptism shows June (they registered her late in the civil record so fudged the date). Interestingly, she is named Nancy on her church record, but pretty sure this is the same person. Her mother is known by both Anne and Nancy in the records of their children.
Michael (Jul 1870), parents - John Gallagher & Anne Corrigan, sponsors- Ned Corrigan & Bridget Corrigan, residence - "Sala" (probably incorrect translation)
MIchael (Jul 1871), parents - John Gallagher & Anne Currigan, residence - Bolyglann (civil record)
Regarding the above MIchaels....they are either the same person and they registered his birth very late, like Anne, OR it is another son named Michael
Hugh (1873), parents - John Gallagher & Anne Currigan, residence - Bolinglara, sponsors - Michael Gallagher & Mary Gallagher
Twins Bridget and James (1875) - parents - John Gallagher & Nancy Currigan, residence - Bolyglann on civil record and Currane on parish baptism records, sponsors - Terrence Gallagher & Judy Currigan and Michael McLoughlin & Nancy Currigan.....the parents also registered the twins late
At first, it was confusing with the two different residences of "Currane" and "Bolyglann" - until I looked at the 1901 census and the Griffith's Valuation records.
The town land you are looking for is Bolinglanna, Achill - you will see many Gallaghers in the Griffith's records as well as the 1901 Census.
The 1901 census shows the town land written as such : Bolinglana (Corraun, Achill, Mayo)....that is where the Currane bit comes from.
I believe that your Edward is living in house # 35 with his mother Nancy, brother Michael and sister Bridget in the 1901 census of Bolinglana. I think that there is an error n Bridget's age though.
Regards,