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Mary Mcclain — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Northampton-County, Pennsylvania
Our Model Tree links this Mary Mcclain across the 1930 and 1940 US Censuses in Northampton-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Northampton-County, Pennsylvania |
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | South Catasauqua Borough |
| 1935 Residence (County) | Northampton |
| Additional Details | |
| Occupation | bookkeeper |
| Industry | ribbon mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Bookkeeper |
| Township / Ward | South Catasauqua Borough |
| Est. Birth Year | ~1914 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcclain | Daughter | — | 26 | ~1914 |
| Elizabeth Mcclain | Daughter | — | 22 | ~1918 |
| Joseph Mcclain | Son | — | 17 | ~1923 |
| Alta Mcclain | Daughter | — | 18 | ~1922 |
| Margaret Mcclain | Daughter | — | 23 | ~1917 |
| Sadie Mcclain | Head | — | 54 | ~1886 |
Census Appearances
1930
Northampton, Pennsylvania
Daughter, age 16
Northampton, Pennsylvania · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Northampton-County, Pennsylvania
Daughter, age 26
Northampton-County, Pennsylvania · implied b. ~1914 — 6 household members
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | South Catasauqua Borough |
| 1935 Residence (County) | Northampton |
| Occupation | bookkeeper |
| Industry | ribbon mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | Hs 2 |
| 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 Mcclain across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcclain
Daughter · 1940 · age 26 · b. ~1914 · Pennsylvania
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Sibling
Margaret Mcclain
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alta Mcclain
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcclain
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mcclain
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-03593-00444)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Forrest Koehler | 31 | Son | Foreman | Pennsylvania |
| 42 | William Koehler | 30 | Son | None | Northern Ireland |
| 43 | Enos Klingman | 67 | Head | Owner | Pennsylvania |
| 44 | Kenneth Mcfarland | 14 | Grandson | None | Pennsylvania |
| 45 | Sadie M. Mcclain | 54 | Head | None | Pennsylvania |
| 46 | Mary Mcclain THIS PERSON | 26 | Daughter | Bookkeeper | Pennsylvania |
| 47 | Margaret Mcclain | 23 | Daughter | Secretary | Pennsylvania |
| 48 | Elizabeth Mcclain | 22 | Daughter | School Teacher | Pennsylvania |
| 49 | Alta Mcclain | 18 | Daughter | None | Pennsylvania |
| 50 | Joseph Mcclain | 17 | Son | None | Pennsylvania |
| 51 | James A. Mcnally | 49 | Head | Maintenance Foreman | Pennsylvania |
| 52 | Helen B. Mcnally | 45 | Sister | None | Pennsylvania |
| 53 | Peter P. Quinn | 62 | Head | Engineer | Pennsylvania |
| 54 | Mary E. Quinn | 55 | Wife | None | New York |
| 55 | Thomas A. Quinn | 22 | Son | Laborer | Pennsylvania |
| 56 | James W. Quinn | 21 | Son | None | Pennsylvania |
| 57 | John J. Quinn | 19 | Son | None | Pennsylvania |
| 58 | Mary E. Quinn | 16 | Daughter | None | Pennsylvania |
| 59 | Dorothy E. Quinn | 14 | Daughter | None | Pennsylvania |
| 60 | Catherine E. Quinn | 12 | Daughter | None | Pennsylvania |
| 61 | Peter Quinn | 5 | Son | None | Pennsylvania |
| 62 | William C. Mcnulty | 68 | Head | None | Pennsylvania |
| 63 | Margaret A. Mcnulty | 70 | Wife | None | Pennsylvania |
| 64 | Edward S. Dougherty | 47 | Head | Bookkeeper | Pennsylvania |
| 65 | Kathryn Dougherty | 41 | Sister | None | Pennsylvania |
| 66 | Felix Dougherty | 64 | Head | None | Pennsylvania |
| 67 | Lillie Dougherty | 55 | Wife | None | Pennsylvania |
| 68 | Leo Dougherty | 18 | Son | Shipping Clerk | Pennsylvania |
| 69 | Amelia Hanam | 47 | Sister-in-law | None | Pennsylvania |
| 70 | Matthew Flynn | 65 | Head | Weaver | Pennsylvania |
| 71 | Catherine Flynn | 24 | Daughter | Yardmaster | Pennsylvania |
| 72 | Joseph Moravek | 27 | Head | Nurse | Pennsylvania |
| 73 | Ella Moravek | 23 | Wife | Ribbon Dyer | Pennsylvania |
| 74 | Alice Moravek | 6 | Daughter | Glazer | Pennsylvania |
| 75 | Joseph Jr. Moravek | 3 | Son | None | Pennsylvania |
| 76 | George Hoden | 45 | Head | Proprietor | Pennsylvania |
| 77 | Dorothy Hoden | 42 | Wife | None | Pennsylvania |
| 78 | John Pech | 48 | Head | None | Pennsylvania |
| 79 | Philip Sabetti | 44 | Head | Labor Foreman | Italy |
| 80 | Mary Sabetti | 48 | Wife | None | 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)