MP
Mary Pierce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, New York
Our Model Tree links this Mary Pierce across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a head (b.~1853), then head of a 3-person household.
Age 87
b. ~1853
Female
Head
Born: England
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Pierce |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 87 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Erie |
| 1935 Residence (County) | Erie |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same Home |
| Birth Country | England |
| Birthplace (normalized) | england |
| Est. Birth Year | ~1853 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jennie Pierce | Daughter | — | 60 | ~1880 |
| Mary Pierce | Head | — | 87 | ~1853 |
| William Smith | Other | — | 18 | ~1922 |
Census Appearances
1920
Erie, New …
Spouse, age 60
Erie, New York · implied b. ~1860 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pearce |
| Given Name | Mary M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1889 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1895 |
| Birthplace (normalized) | england |
1930
Erie, New …
Head, age 72
Erie, New York · implied b. ~1858 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pearce |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1888 |
| Age at First Marriage | 22 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Erie-County, New …
Head, age 87
Erie-County, New York · implied b. ~1853 — 3 household members
| Surname | Pierce |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 87 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Erie |
| 1935 Residence (County) | Erie |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same Home |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Pierce 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 Pierce
Head · 1940 · age 87 · b. ~1853 · New York
★ 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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02825-00613)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isobel Hill | 9 | Daughter | — | New York |
| 2 | Alfred Hill | 7 | Son | — | New York |
| 3 | Velma J. Hill | 6 | Daughter | — | New York |
| 4 | Frankie Hill | 4 | Son | — | New York |
| 5 | Patricia A. Hill | 2 | Daughter | — | New York |
| 6 | Mildred Evans | 60 | Mother | — | Pennsylvania |
| 7 | Walter Williams | 52 | Head | Trackman | Florida |
| 8 | Gervinee Williams | 42 | Wife | — | Florida |
| 9 | Margaret Williams | 16 | Daughter | — | Pennsylvania |
| 10 | Dorothy Williams | 14 | Daughter | — | Pennsylvania |
| 11 | Leonard Williams | 10 | Son | — | Pennsylvania |
| 12 | Annie M. Williams | 7 | Daughter | — | Pennsylvania |
| 13 | Walter Jr. Williams | 6 | Son | — | Pennsylvania |
| 14 | Hudson Jordan | 45 | Head | Grinder | S. Carolina |
| 15 | Lena B. Jordan | 21 | Wife | — | Georgia |
| 16 | Brottalie Jordan | 21 | Son | New Worker | S. Carolina |
| 17 | Mack Jordan | 19 | Son | New Worker | S. Carolina |
| 18 | Idella Jordan | 14 | Daughter | — | New York |
| 19 | Dorothy Jordan | 9 | Daughter | — | New York |
| 20 | Harris Jordan | 8 | Son | — | New York |
| 21 | Robert Jordan | 4 | Son | — | New York |
| 22 | William Jordan | 3 | Son | — | New York |
| 23 | Marie Jackson | 23 | Daughter | New Worker | S. Carolina |
| 24 | Delores Jackson | 6 | Daughter | — | New York |
| 25 | Mary Pierce THIS PERSON | 87 | Head | — | England |
| 26 | Jennie Pierce | 60 | Daughter | Clerk | England |
| 27 | William Smith | 18 | Friend | Paper Hanger | New York |
| 28 | Mark Barton | 78 | Head | — | Pennsylvania |
| 29 | Bertha Jones | 36 | Head | — | Georgia |
| 30 | Bertha Whitempler | 48 | Lodger | — | Wisconsin |
| 31 | Reginald Townborn | 24 | Lodger | Laborer | New York |
| 32 | General Belcher | 24 | Head | Sand Blaster | S. Carolina |
| 33 | Irene Belcher | 19 | Wife | — | Virginia |
| 34 | Elizabeth Belcher | 2 | Daughter | — | New York |
| 35 | Isabel Washington | 45 | Head | Housemaid | Pennsylvania |
| 36 | German Gonzalez | 47 | Head | Sign Painter | Cuba |
| 37 | Viola Gonzalez | 36 | Wife | — | Pennsylvania |
| 38 | Lester Gonzalez | 12 | Son | — | New York |
| 39 | German Gonzalez | 9 | Son | — | New York |
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)