Your great grandmother, Ann Steel Cross. The names seems to connect well to this Cross family.
Andrew's details to these parents show on the Family Search index as:
birth: 21 November 1841
christening: 5 December 1841
OAKSHAW EAST ASSOCIATE CONGREGATION, PAISLEY, RENFREW
Parents Wiliam Cross and Ann Wilson
Just before Andrew's birth, their daughter Ann Steel Cross was born:
birth: 18 April 1840
christening: 3 May 1840
OAKSHAW EAST ASSOCIATE CONGREGATION, PAISLEY, RENFREW
Agnes Cross born in 1843, same location/parents.
Son George shows as:
George Spence Cross
Birth Date 21 Jan 1858
Birthplace MILTON,GLASGOW,LANARK
Monica