If you haven't already found your Susannah CHANTLER, the reference for her marriage certificate is 1887 Sep qtr, Tunbridge district, vol. 2a, page 1005.
Her death certificate reference is 1893 Sep, YOUNG Susannah, aged 33, Tunbridge, 2a 451.This means she was probably born circa 1859/1860.
The 1881 Census shows she was an "inmate" at the Convalescent Home in Dover St. Mary, with the following details regarding her background:
Susan CHANTLER Inmate U Female 20 Brenchley, Kent, England Housemaid
The IGI shows she was baptised at Brenchley as Susanah CHANDLER, dau of Aaron & Mary, on 16 Oct 1859.
Her parents' household in 1881 is recorded thus:
Name Relation Marital Status Gender Age Birthplace Occupation Disability
Aaron CHANTLER Head M Male 47 Brenchley, Kent, England Ag Labourer Mary CHANTLER Wife M Female 44 Caple, Kent, England Emma CHANTLER Dau U Female 20 Brenchley, Kent, England Dress Maker Aaron CHANTLER Son U Male 18 Brenchley, Kent, England Gardener Martha CHANTLER Dau Female 11 Brenchley, Kent, England Scholar Charlie CHANTLER Son Male 8 Brenchley, Kent, England Scholar
Source Information: Dwelling Chantlers Hill Census Place Brenchley, Kent, England Family History Library Film 1341220 Public Records Office Reference RG11 Piece / Folio 0922 / 27 Page Number 21
If you search the 1841, 1851, 1861, 1871 and 1891 Census returns, and for her birth certificate which you may want to order, you should learn more about her family and background.
Hoping this helps.
Heather Johnson Victoria, Australia (Descended from the CHANTLERs of Staplehurst, Kent).