I found these two on BIVRI but no Martha
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HIGGINS, John   Birth
   Gender:   Male
   Birth Date:14 Nov 1870 Birthplace: 420, Castlereagh No 1, Ant, Ire
   Recorded in:    Antrim, Ireland
   Collection:   Civil Registration
   Father:   John HIGGINS
   Mother:   Jane MC GIVERN
Source:   FHL Film 101215   Dates:   1870 - 1871
HIGGINS, William John   Birth
   Gender:   Male
   Birth Date: 18 May 1869 Birthplace: 277, Ballymacarrett, Down, Ire
   Recorded in:  Down, Ireland
   Collection: Civil Registration
   Father:   John HIGGINS
   Mother:   Jane MC GIVERN
Source:   FHL Film 101185   Dates:   1869 - 1870