MH
Mary Hartman — 1920 US Census Record
Model Tree available1920 United States Federal Census · Camden, New Jersey
Our Model Tree links this Mary Hartman across the 1920, 1930 and 1940 US Censuses in Camden, New Jersey (XGBoost, ~Confirmed), with identified parents Adam & Emma — first a daughter (b.~1919), then head of a 3-person household.
Age 1
b. ~1919
Female
Daughter
Born: New Jersey
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Camden, New Jersey |
| Surname | Hartman |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Camden City |
| Est. Birth Year | ~1919 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Hartman | Daughter | — | 1 | ~1919 |
| Adam Hartman | Head | — | 31 | ~1889 |
| Emma Hartman | Spouse | — | 31 | ~1889 |
Census Appearances
1920
Camden, New …
Daughter, age 1
Camden, New Jersey · implied b. ~1919 — 3 household members
| Surname | Hartman |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Camden, New …
Daughter, age 12
Camden, New Jersey · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | Maryellen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Camden-County, New …
Daughter, age 22
Camden-County, New Jersey · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hartman |
| Given Name | Muriel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | W. Collingswood |
| 1935 Residence (County) | Camden |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Hartman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Adam Hartman (~0.92 confidence) and mother Emma Hartman (~0.92 confidence) and father Allen Hartman (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Adam Hartman
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Emma Hartman
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
Allen Hartman
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Hartman
Daughter · 1920 · age 1 · b. ~1919 · New Jersey
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Camden, New Jersey
Open full size
1920 US Federal Census — Camden, New Jersey
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1023unit:0034)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Thomas | 11 | Son | — | Pennsylvania |
| 52 | William | 52 | Boarder | Watchman | Germany |
| 53 | William Van Sciver | 27 | Head | Dental Student | New Jersey |
| 54 | Ida Van Sciver | 21 | Wife | — | New Jersey |
| 55 | William Jr. Van Sciver | 1 | Son | — | New Jersey |
| 56 | Isaac Lippincott | 81 | Head | — | New Jersey |
| 57 | Jane Lippincott | 70 | Wife | — | New Jersey |
| 58 | Ida Stilwell | 55 | Daughter | Mechanic | Rhode Island |
| 59 | Charles R. Turner | 66 | Boarder | Salesman | New York |
| 60 | Philip Adams | 42 | Head | Driver | New Jersey |
| 61 | Bessie Adams | 41 | Wife | — | New Jersey |
| 62 | Fred Adams | 19 | Son | Clerk | New Jersey |
| 63 | Ruth Adams | 18 | Daughter | Clerk | New Jersey |
| 64 | Marion Adams | 17 | Daughter | — | New Jersey |
| 65 | Alfred Adams | 13 | Son | — | New Jersey |
| 66 | Elmer Adams | 7 | Son | — | New Jersey |
| 67 | Albert Adams | 6 | Daughter | — | New Jersey |
| 68 | Howard Adams | 4 | Son | — | New Jersey |
| 69 | Leonard Adams | 1 | Son | — | New Jersey |
| 70 | Milton Richman | 64 | Head | Merchant | New Jersey |
| 71 | Elizabeth Richman | 62 | Wife | — | England |
| 72 | Ralph Bond | 63 | Head | Policeman | New Jersey |
| 73 | Mary E. Bond | 58 | Wife | — | Pennsylvania |
| 74 | Thomas Jones | 47 | Head | Engineer | Pennsylvania |
| 75 | Matilda S. Jones | 46 | Wife | — | Sweden |
| 76 | Harry E. Jones | 24 | Son | Marine Engin | Pennsylvania |
| 77 | Herbert Blackman | 24 | Boarder | Brakeman | Pennsylvania |
| 78 | Harry M. Dease | 44 | Head | Clerk | New Jersey |
| 79 | Annie K. Dease | 43 | Wife | — | New Jersey |
| 80 | David Nichols | 66 | Head | Carpenter | New York |
| 81 | Ida E. Nichols | 61 | Wife | — | New Jersey |
| 82 | Abraham E. Wood | 54 | Head | Carpenter | Colorado |
| 83 | Annie E. Wood | 54 | Wife | — | New Jersey |
| 84 | Abraham E. Jr. Wood | 15 | Son | Stenographer | New Jersey |
| 85 | Myrtle E. Wood | 14 | Daughter | — | New Jersey |
| 86 | Ruth V. Wood | 11 | Daughter | — | New Jersey |
| 87 | Laura B. Whillas | 51 | Sister-in-law | Packer | New Jersey |
| 88 | Thomas Kirby | 44 | Head | Bolter Leader | Pennsylvania |
| 89 | Maggie Kirby | 46 | Wife | — | New Jersey |
| 90 | George Kirby | 18 | Son | Electric Crane | New Jersey |
| 91 | Sam Casey | 22 | Boarder | Shipper | New Jersey |
| 92 | Florence Casey | 20 | Sister-in-law | Bookkeeper | New Jersey |
| 93 | Thomas Gerhard | 78 | Head | — | Pennsylvania |
| 94 | Anna Gerhard | 76 | Wife | — | New Jersey |
| 95 | Henry C. Stanley | 65 | Head | — | England |
| 96 | Margaret Stanley | 50 | Wife | — | England |
| 97 | Adam A. Hartman | 31 | Head | Upholsterer | Pennsylvania |
| 98 | Emma C. Hartman | 31 | Wife | — | New Jersey |
| 99 | Mary E. Hartman THIS PERSON | 1 | Daughter | — | New Jersey |
| 100 | Russell Sams | 28 | Head | Salesman | New Jersey |
Pedigree Summary
Mary
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)