i hope this is the same family that you are searching for:

Child: CAMPBELL, ISAAC PETTINGER
Sex: M
Date of Birth: 1879-05-25 (YYYY-MM-DD)
Place: BASS RIVER
County: KENT
Father: CAMPBELL, DUNCAN
Mother: GRAHAM, ANNIE MARIA

Child: CAMPBELL, MARY ELIZABETH
Sex: F
Date of Birth: 1886-03-04 (YYYY-MM-DD)
Place: BASS RIVER
County: KENT
Father: CAMPBELL, DUNCAN
Mother: GRAHAM, ANNIE

Child: CAMPBELL, LEVA LILIAN
Sex: F
Date of Birth: 1892-02-18 (YYYY-MM-DD)
Place: BASS RIVER
County: KENT
Father: CAMPBELL, DUNCAN
Mother: GRAHAM, ANNIE

Child: CAMPBELL, WILLIAM ARCHIBALD
Sex: M
Date of Birth: 1893-06-27 (YYYY-MM-DD)
Place: BASS RIVER
County: KENT
Father: CAMPBELL, DUNCAN
Mother: GRAHAME, ANNIE