In 1871 could Ellen be Ellen Andrews, 30, born Stonehouse? Living in Plymouth, husband is William.
https://www.familysearch.org/ark:/61903/1:1:V5T2-YZTIs Philip Andrews, 12, the Philip Daniel, age 2, in 1861?
Is there a marriage for them?
The name Steward has been mentioned
Dec 1865 Plymouth 5b 523
Andrews, William
Stuart, Ellen
The other two, J J Smith / J A Condy might pair off via a couple of subsequent birth registrations in Plymouth
Births
ANDREWS, WILLIAM ALFRED
Mother's Maiden Surname: DANIELS
GRO Reference: 1863 D Quarter in EAST STONEHOUSE Volume 05B Page 287
ANDREWS, MARY JANE
Mother's Maiden Surname: DANIELS
GRO Reference: 1866 M Quarter in PLYMOUTH Volume 05B Page 314
ANDREWS, ELLEN ROSINA
Mother's Maiden Surname: DANIEL
GRO Reference: 1868 D Quarter in PLYMOUTH Volume 05B Page 256
Next one
ANDREWS, EDWARD JOHN
Mother's Maiden Surname: DANIEL
GRO Reference: 1871 J Quarter in PLYMOUTH Volume 05B Page 293
Some baptisms at Plymouth St. Peter