MS
Mary Sullivan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Sullivan across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 5-person household.
Age 38
b. ~1892
Female
Spouse
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Sullivan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1892 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Miriam Sullivan | Daughter | — | 12 | ~1918 |
| Eileen Sullivan | Daughter | — | 6 | ~1924 |
| John Sullivan | Head | — | 73 | ~1857 |
| John Sullivan | Son | — | 13 | ~1917 |
| Mary Sullivan | Spouse | — | 38 | ~1892 |
Census Appearances
1920
Baltimore, Maryland
Spouse, age 27
Baltimore, Maryland · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Spouse, age 38
Baltimore, Maryland · implied b. ~1892 — 5 household members
| Surname | Sullivan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 48
Baltimore-City-County, Maryland · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Martha |
| Relationship to Head | Housekeeper |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Divorced |
| Birthplace | Maryland |
| 1935 Residence (City) | Balto Md |
| 1935 Residence (County) | Baltimore City |
| Occupation | Housekeeper |
| Industry | Private home |
| Class of Worker | PW |
| Hours Worked | 77 |
| Income (1939) | 160 |
| Highest Grade | H 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 Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Sullivan
Spouse · 1930 · age 38 · b. ~1892 · Maryland
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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
48 people indexed on this census page (ia:1930:15thcensus866unit:1134)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William M. Miller | 64 | Head | Bricklayer | Maryland |
| 2 | Katie A. Miller | 57 | Wife | None | Maryland |
| 3 | Sydney Miller | 33 | Son | Bricklayer | Maryland |
| 4 | John Broschik | 70 | Head | None | Czechoslovakia |
| 5 | Mary Broschik | 82 | Wife | None | Czechoslovakia |
| 6 | John Reynolds | 74 | Head | None | Maryland |
| 7 | Bertha M. Reynolds | 73 | Wife | None | Maryland |
| 8 | Earl J. Brum | 22 | Head | Cashier | Maryland |
| 9 | Hazel M. Brum | 20 | Wife | None | Maryland |
| 10 | William Gillard | 49 | Head | Receiving Clerk | Maryland |
| 11 | Ada V. Gillard | 50 | Wife | None | Michigan |
| 12 | W. Arthur Gillard | 17 | Son | None | Maryland |
| 13 | Norman E. Gillard | 14 | Son | None | Maryland |
| 14 | William J. Gillard | 77 | Father | None | Maryland |
| 15 | Joseph Lutty | 65 | Head | None | Germany |
| 16 | Catherine Lutty | 67 | Wife | None | Germany |
| 17 | Jacob J. Reynolds | 40 | Son-in-law | Inspector | Maryland |
| 18 | Minnie Reynolds | 38 | Daughter | None | Maryland |
| 19 | John Suchomel | 75 | Head | None | Germany |
| 20 | Catherine Suchomel | 71 | Wife | None | Maryland |
| 21 | John Suchomel | 29 | Son | Roller | Maryland |
| 22 | Joseph Suchomel | 23 | Son | Inspector | Maryland |
| 23 | John W. Hoffman | 66 | Head | None | Maryland |
| 24 | Annie E. Hoffman | 60 | Wife | None | Maryland |
| 25 | Henry J. Hoffman | 27 | Son | Counterman | Maryland |
| 26 | Nellie Hoffman | 24 | Daughter-in-law | Examiner | Maryland |
| 27 | John J. Hoffman | 5 | Grandson | None | Maryland |
| 28 | Elizabeth Lange | 74 | Head | Tester | Maryland |
| 29 | Emma Lange | 47 | Daughter | None | Maryland |
| 30 | John W. Sullivan | 73 | Head | Conductor | Maryland |
| 31 | Mary Sullivan THIS PERSON | 38 | Wife | None | Maryland |
| 32 | John J. Sullivan | 13 | Son | None | Maryland |
| 33 | Miriam Sullivan | 12 | Daughter | None | Maryland |
| 34 | Eileen Sullivan | 6 | Daughter | None | Maryland |
| 35 | John W. Norris | 55 | Head | Fireman | Maryland |
| 36 | Annie E. Norris | 55 | Wife | None | Maryland |
| 37 | Joseph E. Norris | 23 | Son | Laborer | Maryland |
| 38 | Carrie Norris | 16 | Daughter | Stenograph | Maryland |
| 39 | Harry Bradley | 55 | Head | Lumber Fitter | England |
| 40 | Mary M. Bradley | 48 | Wife | None | Maryland |
| 41 | Esther Bradley | 16 | Daughter | None | Maryland |
| 42 | Mildred Bradley | 13 | Daughter | None | Maryland |
| 43 | Mary Moore | 50 | Head | None | New York |
| 44 | Madeline Moore | 28 | Daughter | Lister | Pennsylvania |
| 45 | Mary E. Moore | 25 | Daughter | Lister | Pennsylvania |
| 46 | Edward S. Moore | 21 | Son | None | Pennsylvania |
| 47 | Lock W. Humphrey | 58 | Head | Carpenter | Maryland |
| 48 | Ellen D. Humphrey | 49 | Wife | None | 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)