MP
Mary Peck — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this Mary Peck across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 4-person household.
Age 48
b. ~1892
Female
Spouse
Born: Maine
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Peck |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Elizabeth City |
| 1935 Residence (County) | Union |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Township / Ward | Elizabeth City |
| Est. Birth Year | ~1892 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| David Peck | Son | — | 20 | ~1920 |
| Mary Peck | Spouse | — | 48 | ~1892 |
| Richard Peck | Son | — | 17 | ~1923 |
| Edward Peck | Head | — | 48 | ~1892 |
Census Appearances
1920
Middlesex, New …
Spouse, age 28
Middlesex, New Jersey · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peck |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Union, New …
Other, age 38
Union, New Jersey · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peck |
| Given Name | Mary P. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maine |
| Age at First Marriage | 26 |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Union-County, New …
Spouse, age 48
Union-County, New Jersey · implied b. ~1892 — 4 household members
| Surname | Peck |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maine |
| 1935 Residence (City) | Elizabeth City |
| 1935 Residence (County) | Union |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Peck across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Peck
Spouse · 1940 · age 48 · b. ~1892 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02400-00510)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harry P. Nelson | 60 | Head | — | Pennsylvania |
| 42 | Anna B. Nelson | 60 | Wife | — | Pennsylvania |
| 43 | Wm. R. Nelson | 24 | Son | Clerk | New Jersey |
| 44 | Geo. Henderson | 65 | Head | Toolmaker | Scotland |
| 45 | Mary B. Henderson | 63 | Wife | — | Pennsylvania |
| 46 | Catherine Henderson | 31 | Daughter | Secretary | Pennsylvania |
| 47 | Donaldine Henderson | 28 | Daughter | Agent | Pennsylvania |
| 48 | Mary Williamson | 38 | — | — | Pennsylvania |
| 49 | David B. Williamson | 44 | Son-in-law | Clerk | Pennsylvania |
| 50 | Mary E. Williamson | 4 | Daughter | — | New York |
| 51 | John Shepard | 24 | Lodger | Laborer | New Jersey |
| 52 | Philip Wolgin | 33 | Head | Medical Doctor | New Jersey |
| 53 | Miriam B. Wolgin | 26 | Wife | — | New York |
| 54 | Roberta Wolgin | 0 | Daughter | — | New Jersey |
| 55 | Nathan Wolgin | 58 | Head | Gen. Manager | Poland |
| 56 | Dora S. Wolgin | 57 | Wife | — | New Jersey |
| 57 | Milton Wolgin | 28 | Son | Salesman | New Jersey |
| 58 | Richard Wolgin | 21 | Son | Manager | New Jersey |
| 59 | Harold Card | 49 | Head | — | Massachusetts |
| 60 | Ethel S. Card | 46 | Wife | — | Illinois |
| 61 | Marion Card | 16 | Daughter | — | New Jersey |
| 62 | — | None | — | — | — |
| 63 | Robert Clayton | 70 | Head | — | England |
| 64 | Margaret Clayton | 68 | Wife | — | New Jersey |
| 65 | Edward Peck | 48 | Head | Chemist | Vermont |
| 66 | Mary S. Peck THIS PERSON | 48 | Wife | — | Maine |
| 67 | David Peck | 20 | Son | Messenger | New Jersey |
| 68 | Richard B. Peck | 17 | Son | — | New Jersey |
| 69 | Robert B. Leto | 49 | Head | Chem. Eng. | Indiana |
| 70 | Marion S. Leto | 46 | Wife | — | Massachusetts |
| 71 | Robert A. Leto | 19 | Son | — | New Jersey |
| 72 | Judith Leto | 6 | Daughter | — | New Jersey |
| 73 | Raymond Eiffe | 38 | Head | Chem. Eng. | Massachusetts |
| 74 | Arlyle S. Eiffe | 33 | Wife | — | Honolulu, T.H. |
| 75 | Peter Eiffe | 6 | Daughter | — | New Jersey |
| 76 | Susan Eiffe | 5 | Daughter | — | New Jersey |
| 77 | Francis Archibald | 40 | Head | Chemist | Nova Scotia |
| 78 | Athalie S. Archibald | 38 | Wife | — | Michigan |
| 79 | Wm. E. Archibald | 2 | Son | — | New Jersey |
| 80 | Robert Allen | 40 | Head | Public Accountant | New Jersey |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)