I searched a couple of site for you and came up with the following:
Birth of James HEALY in 1964 This clearly shows mother’s name as GIBLIN
however I found this marriage in Tibohine-Fairymount Parish on March 3rd 1892
Michael HEALY; Groom’s parents given as Patrick HEALY and Mary
CASEY/address Carrowgarriff
Mary MULLOWNEY; Bride’s parents given as Dominic MULLOWNEY and Catherine FLANAGAN/address Barnacowley
Witnesses were Patrick McLOUGHLIN & Brigid FLANAGAN
Husband shown as a widower implying that Michael was previously married
Civil Reference: Jan-Mar 1892 Castlereagh Michael HEALY to Mary MULLOWNEY Volume 4 Page 103
On searching I found a marriage in 1890 in Tibohine-Fairymount Parish of
Michael HEALY; Groom’s parents given as Patrick HEALY and Mary GIBLIN/address Carrowgarriff
Catherine MORAN; Bride’s parents given as William MORAN and Margaret COSTELLO/address Aughrim
Witnesses: John GIBLIN & Bee HOPKINS
Civil Reference: Jan-Mar 1890 Castlereagh Volume 4 Page 97
There is a death record in Jan-Mar 1892 Castlereagh Volume 4 Page 105 of a Catherine HEALY aged 31.
Census return for William and Margaret MORAN in 1901There are baptism records for Brigid 1893, Patrick 1897 and Margaret in 1900 on rootsireland.ie
in Tibohine-Fairymount Parish with the mother’s name MULLOWNEY
and for Mary Catherine HEALY in 1894 with mother’s name MOLONEY.
Probable Civil References are:
Brigid Castlereagh Apr-Jun 1893 Volume 4 Page 112
Mary Catherine Castlereagh Jan-Mar 1895 Volume 4 Page 112 – she may have been registered late
Patrick Castlereagh Jul=Sep 1897 Volume 4 Page 98
Margaret Castlereagh Jul-Sep 1900 Volume 4 Page 104 or Oct-Dec 1900 Volume 4 Page 91
There is a marriage in 1930 for a Margaret HEALY with a possible spouse Patrick McGARRY
Castlereagh Jul-Sep 1930 Volume 4 Page 50;
searching for McGARRY births with a mother HEALY after that date gives results in Belmullet only.
Hope that some of this helps my great grandmother was Brigid GIBLIN b.Dec 13 1842
to John GIBLIN and Mary RODGERS from the same area and possibly related!