Megan we are both still researching the same people:
This is what I found to be the most likely record ( of course we know the Minor side. ) When I search on Gibson I get this records in St. Polycarp over and over:
DORE , CATHERINE Subject sex f. Birth : 1828-06-20 St. Polycarp ( I think this is Isabelle )
DORE , JOSEPH Father
GUIPSON , ISABEL Mother ( in later searches as Gibson )
This is the other record regarding the marriage of their daughter Isabelle: we both have this )
Marriage Aylmer 1850-07-02
MINOR , ANTOINE Subject Mar. st. veuf
DORE , ISABEL Subject age maj Mar. st. single
DORE , JOSEPH Father of the bride
Residence : AYLMER death deceased
GIBSON , ISABEL Mother of the bride Residence : AYLMER
INGLEE , CATHERINE Spouse of the groom death deceased Residence : AYLMER