Query on Mary Ann MARSHALL husbands

https://www.findagrave.com/memorial/236259880/mary-ann-duffield

Mary Ann MARSHALL 1855-1942 buried Carlingford Anglican Cemetery - Section A112
buried beside George DUFFIELD 1856-1938

NSW Marriage Record
Registration number
23/1880
Groom's Family Name
HORNE
Groom's Given Name(s)
JAMES C
Bride's Family Name(s)
MARSHALL
Bride's Given Name(s)
MARY ANN
District
SYDNEY[]

NSW Marriage Record
Registration number
4683/1878
Groom's Family Name
DUFFIELD
Groom's Given Name(s)
GEORGE
Bride's Family Name(s)
MARSHALL
Bride's Given Name(s)
MARY A
District
RYDE

NSW Death Record
DUFFIELD MARY ANN
Registration number
22427/1942
Father's Given Name(s)
RICHARD
Mother's Given Name(s)
JANE
District
RYDE

Annie Hembrough

https://www.findagrave.com/memorial/49548758/anne-hembrough has that she was born in Caithness Scotland

Mary Ann Horne