MG
Mary Glenn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Glenn across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Glenn |
| Given Name | Mary Ellen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Glenn | Son | — | 7 | ~1933 |
| Bertha Glenn | Daughter | — | 14 | ~1926 |
| Thomas Glenn | Son | — | 8 | ~1932 |
| Mary Glenn | Daughter | — | 11 | ~1929 |
| Lillian Glenn | Spouse | — | 45 | ~1895 |
| Albert Glenn | Son | — | 3 | ~1937 |
| Beatrice Glenn | Daughter | — | 4 | ~1936 |
| Otis Glenn | Head | — | 38 | ~1902 |
| Pauline Glenn | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Allegheny, Pennsylvania
Other, age
Allegheny, Pennsylvania · implied b. ~1930 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Glenn |
| Given Name | Margaret |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 11
Allegheny-County, Pennsylvania · implied b. ~1929 — 9 household members
| Surname | Glenn |
| Given Name | Mary Ellen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 4 |
| 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 Glenn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Glenn
Daughter · 1940 · age 11 · b. ~1929 · Pennsylvania
★ You are viewing this record
Sibling
John Glenn
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Glenn
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Glenn
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Glenn
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Glenn
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Glenn
Sibling · 1940 · age 4
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03654-00490)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jack Gracie | 17 | son | Janitor | S. Carolina |
| 2 | Gilbert Jackson | 13 | son | — | Pennsylvania |
| 3 | Otis Smith | 44 | Head | Laborer | Georgia |
| 4 | Pearline Smith | 36 | wife | — | Alabama |
| 5 | Jane Bailey | 39 | lodger | Maid | Georgia |
| 6 | Mary Marker | 54 | Head | — | Pennsylvania |
| 7 | John H. Postmeyer | 74 | brother | — | Pennsylvania |
| 8 | Elmer Allenbach | 39 | Head | Installer | Pennsylvania |
| 9 | Frances Allenbach | 30 | wife | — | Pennsylvania |
| 10 | Edward Allen | 52 | Head | Blacksmith | West Indies |
| 11 | Oliver Brachston | 57 | Head | Janitor | Maryland |
| 12 | Lucille Brachston | 52 | wife | — | Indiana |
| 13 | Nancie Hillis | 46 | Head | 24 | Alabama |
| 14 | Jessie Tyler | 41 | Head | Domestic | Florida |
| 15 | Janella Brown | 38 | lodger | House Work | Alabama |
| 16 | Robert Alexander | 27 | Head | Laborer | N. Carolina |
| 17 | George Alexander | 12 | son | — | Alabama |
| 18 | Pearl Shevers | 33 | lodger | — | Alabama |
| 19 | Leonard Gray | 30 | lodger | Laborer | Alabama |
| 20 | Bertha Gray | 26 | wife | — | S. Carolina |
| 21 | Otis Glenn | 38 | Head | Janitor | S. Carolina |
| 22 | Lillian Glenn | 45 | wife | — | N. Carolina |
| 23 | Bertha Glenn | 14 | daughter | — | Pennsylvania |
| 24 | Pauline Glenn | 13 | daughter | — | Pennsylvania |
| 25 | Mary Ellen Glenn THIS PERSON | 11 | daughter | — | Pennsylvania |
| 26 | Thomas Glenn | 8 | son | — | Pennsylvania |
| 27 | John Glenn | 7 | son | — | Pennsylvania |
| 28 | Beatrice Glenn | 4 | daughter | — | Pennsylvania |
| 29 | Albert Glenn | 3 | son | — | Pennsylvania |
| 30 | Lucius Davenport | 42 | Head | Checker | Alabama |
| 31 | Bernice Davenport | 40 | wife | — | Alabama |
| 32 | William Harley | 25 | brother | Laborer | Pennsylvania |
| 33 | Herbert Harley | 38 | brother | Laborer | Pennsylvania |
| 34 | Craig Conley | 39 | Head | Laborer | Alabama |
| 35 | Jennie Conley | 29 | wife | — | Georgia |
| 36 | Charles Martin | 17 | son | — | Georgia |
| 37 | Clarice Martin | 15 | son | — | Pennsylvania |
| 38 | Ruby Martin | 13 | daughter | — | Pennsylvania |
| 39 | Marian Martin | 12 | daughter | — | Pennsylvania |
| 40 | Pauline Martin | 11 | 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)