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Mary Williamson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Mercer, New Jersey
Our Model Tree links this Mary Williamson across the 1920, 1930 and 1940 US Censuses in Mercer, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 7-person household.
Age 70
b. ~1860
Female
Head
Born: Pennsylvania
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Mercer, New Jersey |
| Surname | Williamson |
| Given Name | Mary S. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Hamilton Township |
| Est. Birth Year | ~1860 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Golding | Daughter | — | 38 | ~1892 |
| Annie Applegate | Daughter | — | 36 | ~1894 |
| Mary Williamson | Head | — | 70 | ~1860 |
| M Golding | Other | — | 11 | ~1919 |
| Roland Golding | Other | — | 30 | ~1900 |
| Sara Knable | Other | — | 29 | ~1901 |
| Louis Williamson | Son | — | 34 | ~1896 |
Census Appearances
1920
Mercer, New …
Head, age 59
Mercer, New Jersey · implied b. ~1861 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | Mary A. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Mercer, New …
Head, age 70
Mercer, New Jersey · implied b. ~1860 — 7 household members
| Surname | Williamson |
| Given Name | Mary S. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Mercer-County, New …
Other, age 79
Mercer-County, New Jersey · implied b. ~1861 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | Mary A. |
| Relationship to Head | Mother in law |
| Sex | F |
| Color / Race | White |
| Age | 79 |
| Marital Status | Widowed |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Williamson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Williamson
Head · 1930 · age 70 · b. ~1860 · New Jersey
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Mercer, New Jersey
Open full size
1930 US Federal Census — Mercer, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1362:0127)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Robert Eastridge | 9 | Head | — | New Jersey |
| 2 | Walter Eastridge | 8 | Brother | — | New Jersey |
| 3 | Alice F. Eastridge | 47 | Sister | Dept. Clerk|Typist | Pennsylvania |
| 4 | Michael Braham | 65 | Boarder | Policeman | Pennsylvania |
| 5 | Mary S. Williamson THIS PERSON | 70 | Head | — | Pennsylvania |
| 6 | Louis J. Williamson | 34 | Son | Chauffeur | Pennsylvania |
| 7 | Charlotte Golding | 38 | Daughter | Patternmaker | Pennsylvania |
| 8 | Annie Applegate | 36 | Daughter | Waitress | Pennsylvania |
| 9 | Sara Knable | 29 | Boarder | — | Pennsylvania |
| 10 | Roland J. Golding | 30 | Grandson | Chauffeur | New York |
| 11 | M. Pearl Golding | 11 | Granddaughter | — | New Jersey |
| 12 | Thomas Spangler | 42 | Head | Signalman | Pennsylvania |
| 13 | Matilda Spangler | 42 | Wife | — | Illinois |
| 14 | William Spangler | 12 | Son | — | Montana |
| 15 | Donald Spangler | 10 | Son | — | Pennsylvania |
| 16 | Rodger Spangler | 8 | Son | — | Pennsylvania |
| 17 | Robert J. Pruitt | 63 | Head | Street Officer|Street Cleaner | Pennsylvania |
| 18 | Lucy Pruitt | 63 | Wife | — | Pennsylvania |
| 19 | Frederick Lambert | 63 | Boarder | Watchman | Pennsylvania |
| 20 | Beverly Anglum | 17 | Boarder | Clerk | New Jersey |
| 21 | John F. Maloney | 53 | Head | Salesman | Ireland |
| 22 | Annie C. Maloney | 47 | Wife | — | Ireland |
| 23 | Margaret Maloney | 16 | Daughter | — | New Jersey |
| 24 | Doris Maloney | 14 | Daughter | — | New Jersey |
| 25 | Dorothy Maloney | 13 | Daughter | — | New Jersey |
| 26 | Helen Maloney | 11 | Daughter | — | New Jersey |
| 27 | Anna May Maloney | 7 | Daughter | — | New Jersey |
| 28 | Arthur E. Northwood | 43 | Head | Fireman | England |
| 29 | Ethel M. Northwood | 36 | Wife | — | Massachusetts |
| 30 | Albert Northwood | 10 | Son | — | New Jersey |
| 31 | Arthur J. Northwood | 8 | Son | — | New Jersey |
| 32 | Grace Northwood | 4 | Daughter | — | New Jersey |
| 33 | Edith Northwood | 3 | Daughter | — | New Jersey |
| 34 | Paul Matthes | 45 | Head | Manager | Illinois |
| 35 | Hattie Matthes | 47 | Wife | — | New Jersey |
| 36 | Howard Matthes | 21 | Son | Collector | New Jersey |
| 37 | Walter R. Cranstoun | 36 | Head | Printer | Rhode Island |
| 38 | Florence Cranstoun | 34 | Wife | — | Connecticut |
| 39 | Margaret Cranstoun | 13 | Daughter | — | New Jersey |
| 40 | Mary Cranstoun | 8 | Daughter | — | New Jersey |
| 41 | Barbara Cranstoun | 4 | Daughter | — | New Jersey |
| 42 | Walter R. Jr. Cranstoun | 1 | Son | — | New Jersey |
| 43 | George C. Cook | 33 | Head | Structural Iron | New Jersey |
| 44 | Edith Cook | 23 | Wife | — | New Jersey |
| 45 | John Cook | 2 | Son | — | New Jersey |
| 46 | Doris Cook | 1 | Daughter | — | New Jersey |
| 47 | Mads Jensen | 59 | Head | Laborer | Denmark |
| 48 | Anna M. Jensen | 41 | Wife | — | Pennsylvania |
| 49 | Elmer Jensen | 21 | Son | Laborer | Pennsylvania |
| 50 | Clarence Jensen | 10 | Son | Office Boy | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)