could her maiden name be Forster? It is Peter’s middle name in the IGI Birth and IGI Marr??
in FreeREG there is a marr between George Ledger and Jane Foster

POSS England, Select Births and Christenings, 1538-1975 @ancestry.com
Source Information: Ancestry.com. England, Select Births and Christenings, 1538-1975 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2014.
Original data: England, Births and Christenings, 1538-1975. Salt Lake City, Utah: FamilySearch, 2013.
Name: Jane Forster; Gender: Female
Baptism Date: 24 Apr 1796
Baptism Place: Tanfield,Durham,England
Father: Thomas Forster
FHL Film Number: 0091138, 0091139

POSS FreeREG Marriage??
County Durham; Place Washington
Church name Holy Trinity
Register type Unspecified
Marriage date 6 Nov 1814
Groom: George LEDGER
Bride: Jane FOSTER
Transcribed by Josephine Bartlett; Credit Josephine Bartlett
File line number 118
Familysearch wiki: Parish History
“WASHINGTON, a parish, in the union of Chesterle-Street, E. division of Chester ward, N. division of the county of Durham; containing, with the chapelry of Usworth, the township of Barmston, and part of North Bidick. The family of Washington, the American general, is said to have come from this place.
Additional information: Washington is an Ancient Parish in the county of Durham. Other places in the parish include: Barmston and North Biddick.”

1841UKC George Ledger and Family; England Census; Durham > Chester Le Street > Harraton > District 1 > 2; image 2 of 16 @ancestry.com; Source Citation: Class: HO107; Piece 300; Book: 5; Civil Parish: Chester Le Street; County: Durham; Enumeration District: 1; Folio: 5; Page: 4; Line: 17; GSU roll: 241348.
George Lodger 55 pitman
Jane Lodger 45
Peter Lodger 20
Thos Lodger 15
Dorothy Lodger 16
Jane Lodger 14
Ann Lodger 12
Bel Lodger 9
George Lodger 6
all born in county

1851UKC Jane Ledger and Fam; England Census Durham > Harraton > District 2a > 1; image 1 of 39 @ancestry.com; Source Citation: Class: HO107; Piece: 2394; Folio: 393; Page: 1; GSU roll: 87072.; Long Rowe
Jane Ledger 60 widow b Fatfield, Durham
“Aunt in Law”?? weird transcription
Dorothy Ledger 24 daughter b Fairfield(Fatfield?), Durham, England
George Ledger 16 son b Fatfield
William Ledger 2 grandson- is this Dorothy’s son? b Fairfield, Durham, England

GRO Death LEDGER, JANE age 62
GRO Reference: 1855 J Quarter in CHESTER LE STREET Volume 10A Page 171
Superintendent Registrar’s District Chester le Street
Registrar’s District Harraton
1855 DEATHS in the District of Harraton in the County of Durham
no 447
1 june 1855 Fatfield Harraton
Jane Ledger, female, 62 years; widow of George Ledger, coalminer
CoD Dropsy, certified
informant The mark of Mary Fenwick, present at Death, Fatfield Harraton
registered 2 june 1855
and
POSS FreeBMD Deaths Jun 1855 (>99%)
Ledger Jane Chester le S. 10a 171
and from @ancestry:
England & Wales, Civil Registration Death Index, 1837-1915
Name: Jane Ledger
Registration Year: 1855
Registration Quarter: Apr-May-Jun
Registration district: Chester le Street
Inferred County: Durham
Volume: 10a
Page: 171

NO FreeBMD Deaths Mar 1861 (>99%)
NO age 16 per GRO
Ledger Jane Chester le St. 10a 247

POSS England, Select Deaths and Burials, 1538-1991 @ancestry
Source Information: Ancestry.com. England, Select Deaths and Burials, 1538-1991 [database on-line]. Provo, UT, USA: Ancestry.com Operations, Inc., 2014.
Original data: England Deaths and Burials, 1538-1991. Salt Lake City, Utah: FamilySearch, 2013.
Name: Jane Ledger; Gender: Female
Age: 61; Birth Date: 1794
Burial Date: 4 Jun 1855
Burial Place: Chester Le Street, Durham, England
FHL Film Number: 1894227
Reference ID: 3