MD
Mary Davidson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Northampton-County, Pennsylvania
Our Model Tree links this Mary Davidson across the 1920, 1930 and 1940 US Censuses in Northampton-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1869), then head of a 3-person household.
Age 71
b. ~1869
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Northampton-County, Pennsylvania |
| Surname | Davidson |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Moore Township |
| 1935 Residence (County) | Northampton |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Moore Township |
| Est. Birth Year | ~1869 |
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 |
|---|---|---|---|---|
| Annie Davidson | Daughter | — | 43 | ~1897 |
| John Davidson | Head | — | 51 | ~1889 |
| Mary Davidson | Spouse | — | 71 | ~1869 |
Census Appearances
1920
Northampton, Pennsylvania
Spouse, age 50
Northampton, Pennsylvania · implied b. ~1870 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Northampton, Pennsylvania
Other, age 61
Northampton, Pennsylvania · implied b. ~1869 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Mary A. |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 24 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northampton-County, Pennsylvania
Spouse, age 71
Northampton-County, Pennsylvania · implied b. ~1869 — 3 household members
| Surname | Davidson |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Moore Township |
| 1935 Residence (County) | Northampton |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| 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 Davidson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Davidson
Spouse · 1940 · age 71 · b. ~1869 · Pennsylvania
★ 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 — Northampton-County, Pennsylvania
Open full size
1940 US Federal Census — Northampton-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03592-00582)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertie Hahn | 44 | Wife | — | Pennsylvania |
| 2 | George Hahn | 24 | Son | Laborer | Pennsylvania |
| 3 | Raymond Hahn | 23 | Son | Laborer | Pennsylvania |
| 4 | Sterling Hahn | 20 | Son | Farm Hand | Pennsylvania |
| 5 | Esther Hahn | 18 | Daughter | Maid | Pennsylvania |
| 6 | Pauline Hahn | 13 | Daughter | — | Pennsylvania |
| 7 | Paul Hahn | 13 | Son | — | Pennsylvania |
| 8 | Howard Hahn | 12 | Son | — | Pennsylvania |
| 9 | Peter J. Reph | 53 | Head | Carpenter | Pennsylvania |
| 10 | Sarah E. Reph | 45 | Wife | — | Pennsylvania |
| 11 | John A. Davidson | 51 | Head | — | Pennsylvania |
| 12 | Mary A. Davidson THIS PERSON | 71 | Wife | — | Pennsylvania |
| 13 | Annie H. Davidson | 43 | Daughter | — | Pennsylvania |
| 14 | Robert D. Hagenbuch | 74 | Head | Farmer | Pennsylvania |
| 15 | Alice J. Hagenbuch | 74 | Wife | — | Pennsylvania |
| 16 | Elmer F. Reph | 47 | Head | Laborer | Pennsylvania |
| 17 | Edna M. Reph | 45 | Wife | — | Pennsylvania |
| 18 | Kenneth E. Reph | 17 | Son | Farm Hand | Pennsylvania |
| 19 | Lester L. Baudenbach | 24 | Head | Laborer | Pennsylvania |
| 20 | Melva L. Baudenbach | 21 | Wife | — | Pennsylvania |
| 21 | Frances J. Baudenbach | 3 | Daughter | — | Pennsylvania |
| 22 | Stanley A. Hoffner | 32 | Head | Oiler | Pennsylvania |
| 23 | Marion P. Hoffner | 24 | Wife | — | Pennsylvania |
| 24 | Elaine J. Hoffner | 5 | Daughter | — | Pennsylvania |
| 25 | Carl S. Hoffner | 4 | Son | — | Pennsylvania |
| 26 | Ronald D. Hoffner | 1 | Son | — | Pennsylvania |
| 27 | Donald H. Trach | 26 | Head | Electrician | Pennsylvania |
| 28 | Mary J. Trach | 21 | Wife | Seaming | Pennsylvania |
| 29 | Sevilla M. Trach | 56 | Head | Grocer | Pennsylvania |
| 30 | Winifred V. Trach | 23 | Daughter | — | Pennsylvania |
| 31 | Harlan P. Trach | 23 | Son | Farm Hand | Pennsylvania |
| 32 | Wayne J. Trach | 20 | Son | Farmer | Pennsylvania |
| 33 | Winfield L. Trach | 17 | Son | — | Pennsylvania |
| 34 | Randolph H. Trach | 15 | Son | — | Pennsylvania |
| 35 | Amanda Kleckner | 76 | Head | — | Pennsylvania |
| 36 | Victor J. Hock | 56 | Head | Carpenter | Pennsylvania |
| 37 | Christiana Solt | 52 | Housekeeper | Maid | Pennsylvania |
| 38 | Kermit A. Trach | 29 | Head | Mechanic | Pennsylvania |
| 39 | Mary C. Trach | 22 | Wife | — | Pennsylvania |
| 40 | Nadine C. Trach | 1 | Daughter | — | Pennsylvania |
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)