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Mary Bailey — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Montgomery, Pennsylvania
Our Model Tree links this Mary Bailey across the 1920 and 1930 US Censuses in Montgomery, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 14-person household.
Age 12
b. ~1918
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Montgomery, Pennsylvania |
| Surname | Bailey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Borough Pottstown |
| Est. Birth Year | ~1918 |
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.
14 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Bailey | Daughter | — | 2 | ~1928 |
| Stella Bailey | Daughter | — | 13 | ~1917 |
| Helen Bailey | Daughter | — | 5 | ~1925 |
| Edith Bailey | Daughter | — | 8 | ~1922 |
| Eva Bailey | Daughter | — | 17 | ~1913 |
| Mary Bailey | Daughter | — | 12 | ~1918 |
| Dorothy Bailey | Daughter | — | 9 | ~1921 |
| Edward Bailey | Head | — | 43 | ~1887 |
| Emma Miller | Other | — | 70 | ~1860 |
| Howard Bailey | Son | — | 6 | ~1924 |
| Edward Bailey | Son | — | 14 | ~1916 |
| Harry Bailey | Son | — | 11 | ~1919 |
| Thomas Bailey | Son | — | 10 | ~1920 |
| Mary Bailey | Spouse | — | 42 | ~1888 |
Census Appearances
1920
Montgomery, Pennsylvania
Daughter, age 1
Montgomery, Pennsylvania · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Montgomery, Pennsylvania
Daughter, age 12
Montgomery, Pennsylvania · implied b. ~1918 — 14 household members
| Surname | Bailey |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| 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 Bailey across 2 US Census years (1920 and 1930) in Montgomery, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Bailey
Daughter · 1930 · age 12 · b. ~1918 · Pennsylvania
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Sibling
Howard Bailey
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Bailey
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Bailey
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Bailey
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Bailey
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Bailey
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Bailey
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Bailey
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stella Bailey
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Bailey
Sibling · 1930 · age 17
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
1930 US Federal Census — Montgomery, Pennsylvania
Open full size
1930 US Federal Census — Montgomery, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2084:1099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elmer Dell | 32 | Boarder | — | Pennsylvania |
| 2 | Gladys Evans | 19 | Boarder | Folder | Pennsylvania |
| 3 | Jacob B. Keft | 51 | Head | Labor | Pennsylvania |
| 4 | Ida Keft | 47 | Wife | — | Pennsylvania |
| 5 | Stanley Keft | 18 | Son | — | Pennsylvania |
| 6 | Irving F. Keft | 17 | Boarder | — | Pennsylvania |
| 7 | William Light | 75 | Head | Retired | Pennsylvania |
| 8 | Levi Light | 22 | Boarder | Waiter | Pennsylvania |
| 9 | Harry G. Miller | 46 | Head | — | Pennsylvania |
| 10 | Ida M. Miller | 43 | Wife | — | Pennsylvania |
| 11 | Thelma Miller | 14 | Daughter | — | Pennsylvania |
| 12 | Stanley Miller | 12 | Son | — | Pennsylvania |
| 13 | Helen Miller | 7 | Daughter | — | Pennsylvania |
| 14 | Leonard Miller | 5 | Son | — | Pennsylvania |
| 15 | Richard S. | 29 | Boarder | Labor | Pennsylvania |
| 16 | Richard Loss | 70 | Head | Retired | Virginia |
| 17 | Ella Loss | 65 | Wife | — | Virginia |
| 18 | Cyrus Miller | 40 | Head | Plumber | Pennsylvania |
| 19 | Sara Miller | 36 | Wife | — | Pennsylvania |
| 20 | Pearl Miller | 18 | Daughter | — | Pennsylvania |
| 21 | Frederick Miller | 13 | Son | — | Pennsylvania |
| 22 | Ray Miller | 7 | Son | — | Pennsylvania |
| 23 | Edward H. Bailey | 43 | Head | Truck | Pennsylvania |
| 24 | Mary Bailey | 42 | Wife | — | Pennsylvania |
| 25 | Eva Bailey | 17 | Daughter | Operator | Pennsylvania |
| 26 | Edward Jr. Bailey | 14 | Son | Baker | Pennsylvania |
| 27 | Stella Bailey | 13 | Daughter | — | Pennsylvania |
| 28 | Mary Bailey THIS PERSON | 12 | Daughter | — | Pennsylvania |
| 29 | Harry Bailey | 11 | Son | — | Pennsylvania |
| 30 | Thomas Bailey | 10 | Son | — | Pennsylvania |
| 31 | Dorothy Bailey | 9 | Daughter | — | Pennsylvania |
| 32 | Edith Bailey | 8 | Daughter | — | Pennsylvania |
| 33 | Howard Bailey | 6 | Son | — | Pennsylvania |
| 34 | Helen Bailey | 5 | Daughter | — | Pennsylvania |
| 35 | Betty Jane Bailey | 2 | Daughter | — | Pennsylvania |
| 36 | Emma Miller | 70 | Boarder | — | Pennsylvania |
| 37 | George J. | 1 | Boarder | — | Pennsylvania |
| 38 | William G. Miller | 49 | Head | Plasterer | Pennsylvania |
| 39 | Amanda V. Miller | 52 | Wife | — | Pennsylvania |
| 40 | George L. Miller | 26 | Son | — | Pennsylvania |
| 41 | Charles C. Price | 46 | Head | Labor | Pennsylvania |
| 42 | Sarah Price | 49 | Wife | — | Pennsylvania |
| 43 | Florence E. Price | 4 | Adopted Daughter | — | Pennsylvania |
| 44 | Anna F. Fletcher | 15 | Boarder | — | Pennsylvania |
| 45 | William G. Mcmichael | 18 | Boarder | — | Pennsylvania |
| 46 | Walter G. Harner | 41 | Head | Labor | Pennsylvania |
| 47 | Amy G. Harner | 40 | Wife | — | Pennsylvania |
| 48 | James F. Harner | 13 | Son | — | Pennsylvania |
| 49 | Vacant Lot | None | — | — | — |
| 50 | Vacant Lot | None | — | — | — |
Related Census Records
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)