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Mary Mullen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Mullen across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 10
b. ~1920
Female
Daughter
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Mullen |
| Given Name | Mary W |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Francis Mullen | Daughter | — | 8 | ~1922 |
| Anna Mullen | Daughter | — | 4 | ~1926 |
| Mary Mullen | Daughter | — | 10 | ~1920 |
| John Mullen | Head | — | 43 | ~1887 |
| Bernard Mullen | Son | — | 17 | ~1913 |
| John Mullen | Son | — | 14 | ~1916 |
| Anna Mullen | Spouse | — | 34 | ~1896 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 10
Baltimore, Maryland · implied b. ~1920 — 7 household members
| Surname | Mullen |
| Given Name | Mary W |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Daughter, age 20
Baltimore-City-County, Maryland · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Millen |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore City |
| Occupation | Factory Laborer |
| Industry | Spices |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 448 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Mullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mullen
Daughter · 1930 · age 10 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
Bernard Mullen
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mullen
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mullen
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mullen
Sibling · 1930 · age 14
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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus854unit:1067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clemens Lamm | 50 | Head | Owner | Germany |
| 2 | Florence M Lamm | 47 | Wife | — | Maryland |
| 3 | Clemens Jr Lamm | 17 | Son | — | Maryland |
| 4 | William Cooper | 25 | Head | Cabinet Maker | Maryland |
| 5 | Cassie Cooper | 23 | Wife | — | Maryland |
| 6 | Gordon Cooper | 0 | Son | — | Maryland |
| 7 | August Reuter | 59 | Head | Printer | Maryland |
| 8 | Kate M Reuter | 61 | Wife | — | Maryland |
| 9 | Margaret G Reuter | 34 | Daughter | Seamstress | Maryland |
| 10 | Agnes C Reuter | 27 | Daughter | Seamstress | Maryland |
| 11 | Catherine Reuter | 24 | Daughter | Seamstress | Maryland |
| 12 | Christian F Reuter | 22 | Son | — | Maryland |
| 13 | Delia Donnelon | 80 | Boarder | — | Ireland |
| 14 | John E Bull | 51 | Head | Salesman | Maryland |
| 15 | Catherine Bull | 51 | Wife | — | Maryland |
| 16 | Margaret Mcnamara | 51 | Sister-in-law | — | Maryland |
| 17 | Patrick Mcnamara | 48 | Brother-in-law | Clerk | Maryland |
| 18 | Margaret Welsh | 60 | Head | — | Maryland |
| 19 | Mary Welsh | 36 | Daughter | — | Maryland |
| 20 | Agnes Welsh | 34 | Daughter | Cashier | Maryland |
| 21 | David Charles Welsh | 32 | Son | — | Maryland |
| 22 | Thomas Power | 60 | Head | Clerk | Maryland |
| 23 | Emily Power | 60 | Wife | — | Ireland |
| 24 | Elizabeth Power | 28 | Daughter | Saleslady | Maryland |
| 25 | Joseph Power | 23 | Son | Agent | Maryland |
| 26 | John F Maylaw | 57 | Head | Yard Master | Maryland |
| 27 | Mary C Maylaw | 62 | Wife | — | Maryland |
| 28 | Mary Breaseng | 39 | Daughter | Seamstress | Maryland |
| 29 | Margaret Mulyuely | 37 | Head | — | Maryland |
| 30 | John Mulyuely | 21 | Son | Chauffeur | Maryland |
| 31 | John J Jr Mulyuely | 6 | Son | — | Maryland |
| 32 | Edward M Mulyuely | 4 | Son | — | Maryland |
| 33 | Thomas M Mulyuely | 2 | Son | — | Maryland |
| 34 | Wm E Pefreing | 7 | Grandson | — | Maryland |
| 35 | John Dershow | 57 | Head | — | Maryland |
| 36 | Alice Dershow | 65 | Wife | — | Maryland |
| 37 | George Dershow | 17 | Nephew | — | Maryland |
| 38 | Mary Smith | 48 | Lodger | — | Maryland |
| 39 | Louis B Eyler | 65 | Head | — | Maryland |
| 40 | Mary Eyler | 64 | Wife | — | Maryland |
| 41 | Pauline Eyler | 30 | Daughter | Clerk | Maryland |
| 42 | Mary Seelig | 55 | Head | — | Maryland |
| 43 | Mary Seelig | 30 | Daughter | Saleslady | Maryland |
| 44 | John F Mullen | 43 | Head | Machinist | Maryland |
| 45 | Anna R Mullen | 34 | Wife | — | Maryland |
| 46 | Bernard J Mullen | 17 | Son | Egg Candling | Maryland |
| 47 | John R Mullen | 14 | Son | — | Maryland |
| 48 | Mary W Mullen THIS PERSON | 10 | Daughter | — | Maryland |
| 49 | Francis E Mullen | 8 | Daughter | — | Maryland |
| 50 | Anna E Mullen | 4 | Daughter | — | Maryland |
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)