MF
Mary Flaherty — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Flaherty across the 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1878), then head of a 5-person household.
Age 52
b. ~1878
Female
Spouse
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Flaherty |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1894 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1878 |
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 |
|---|---|---|---|---|
| Mary Flaherty | Spouse | — | 52 | ~1878 |
| Patrick Flaherty | Head | — | 52 | ~1878 |
| Margaret Flaherty | Daughter | — | 13 | ~1917 |
| Alma Flaherty | Daughter | — | 11 | ~1919 |
| Mary Flaherty | Daughter | — | 15 | ~1915 |
Census Appearances
1910
None, Maryland
Spouse, age 29
None, Maryland · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 5 |
| Children Born | 2 |
| Children Living | 1 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
None, Maryland
Spouse, age 40
None, Maryland · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1895 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | ireland |
1930
Baltimore, Maryland
Spouse, age 52
Baltimore, Maryland · implied b. ~1878 — 5 household members
| Surname | Flaherty |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1894 |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Flaherty across 3 US Census years (1910, 1920 and 1930) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Flaherty
Spouse · 1930 · age 52 · b. ~1878 · Maryland
★ You are viewing this record
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:1930:15thcensus867unit:0837)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patrick J. Flaherty | 52 | Head | — | Ireland |
| 2 | Mary Flaherty THIS PERSON | 52 | Wife | Laborer | Ireland |
| 3 | Mary Flaherty | 15 | Daughter | — | Maryland |
| 4 | Margaret Flaherty | 13 | Daughter | — | Maryland |
| 5 | Alma Flaherty | 11 | Daughter | — | Maryland |
| 6 | Arthur White | 31 | Head | — | Maryland |
| 7 | Helen H. White | 20 | Wife | — | Maryland |
| 8 | Lawrence White | 38 | Brother | — | Maryland |
| 9 | Lawrence M. Jr. White | 13 | Son | — | Maryland |
| 10 | Catherine Dunsden | 39 | Boarder | — | Maryland |
| 11 | Louise Fields | 74 | Grandmother | — | Germany |
| 12 | William Holterman | 52 | Head | — | Maryland |
| 13 | Gertie Holterman | 25 | Wife | — | North Carolina |
| 14 | Thelma Holterman | 5 | Daughter | — | Maryland |
| 15 | Emma Holterman | 3 | Daughter | — | Maryland |
| 16 | John M. Rikers | 3 | Step-son | — | North Carolina |
| 17 | Frederick Apple | 43 | Head | — | Maryland |
| 18 | Laura H. Apple | 33 | Wife | — | Maryland |
| 19 | Frederick Jr. Apple | 17 | Son | — | Maryland |
| 20 | Gilbert L. Apple | 15 | Son | — | Maryland |
| 21 | John Burns | 75 | Head | — | New York |
| 22 | Ada Burns | 67 | Wife | — | Pennsylvania |
| 23 | John Jr. Burns | 22 | Son | Fireman | Virginia |
| 24 | Leonard Culotta | 33 | Head | Butcher | Maryland |
| 25 | Anna Culotta | 32 | Wife | — | Maryland |
| 26 | Jacob L. Didicke | 47 | Head | — | Maryland |
| 27 | Anna M. Didicke | 47 | Wife | — | Maryland |
| 28 | George Stancil | 71 | Head | — | Ruthenia |
| 29 | Agatha Stancil | 50 | Wife | — | Ruthenia |
| 30 | Edgar R. Luhn | 26 | Head | Painter | Maryland |
| 31 | Catherine Luhn | 20 | Wife | — | Maryland |
| 32 | Edgar R. Jr. Luhn | 2 | Son | — | Maryland |
| 33 | Edna White | 26 | Sister-law | Bookkeeper | Maryland |
| 34 | Nellie White | 22 | Sister-law | Bookkeeper | Maryland |
| 35 | William Hefner | 25 | Boarder | Leaderman | Virginia |
| 36 | Arthur Murninghan | 18 | Boarder | Helper | Maryland |
| 37 | Calvin S. Miller | 45 | Head | Cook | Maryland |
| 38 | Mary Miller | 40 | Wife | — | Virginia |
| 39 | Frank L. Hart | 25 | Step-son | Lumber | Virginia |
| 40 | Gladys Hart | 20 | Daughter-law | — | Maryland |
| 41 | Audrey Hart | 1 | Granddaughter | — | Maryland |
| 42 | William Ward | 78 | Father-law | — | South Carolina |
| 43 | Louis F. Parr | 28 | Head | Butcher | Maryland |
| 44 | Eton Marie Parr | 26 | Wife | — | Maryland |
| 45 | Rita Parr | 3 | Daughter | — | Maryland |
| 46 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 47 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 48 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 49 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 50 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
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)