MH
Mary Harrington — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Mary Harrington across the 1920, 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 6-person household.
Age 51
b. ~1879
Female
Head
Born: Mass
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Harrington |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Mass |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
| Occupation | Waitress |
| Township / Ward | City Of Boston |
| Est. Birth Year | ~1879 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Harrington | Daughter | — | 21 | ~1909 |
| Jeanette Harrington | Daughter | — | 5 | ~1925 |
| Claire Harrington | Daughter | — | 12 | ~1918 |
| Mary Harrington | Head | — | 51 | ~1879 |
| Helen Crosby | Other | — | 25 | ~1905 |
| Frank Crosby | Other | — | 22 | ~1908 |
Census Appearances
1920
Suffolk, Massachusetts
Spouse, age 39
Suffolk, Massachusetts · implied b. ~1881 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Mass |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1930
Suffolk, Massachusetts
Head, age 51
Suffolk, Massachusetts · implied b. ~1879 — 6 household members
| Surname | Harrington |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Mass |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1940
Suffolk-County, Massachusetts
Other, age 60
Suffolk-County, Massachusetts · implied b. ~1880 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | Margaret T. |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 60 |
| Marital Status | Widowed |
| Birthplace | Mass. |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Industry | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
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 Harrington 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 Harrington
Head · 1930 · age 51 · b. ~1879 · Massachusetts
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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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel954:0055)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Grace Thebeau | 48 | Wife | — | Ireland |
| 52 | Gertrude Thebeau | 23 | Daughter | Clerk | Mass |
| 53 | Rita Thebeau | 21 | Daughter | — | Mass |
| 54 | Grace Thebeau | 13 | Daughter | — | Mass |
| 55 | Dorothy Thebeau | 12 | Daughter | — | Mass |
| 56 | Joseph O'Hare | 25 | Nephew | Laborer | Mass |
| 57 | John O'Hare | 24 | Nephew | Helper | Mass |
| 58 | Rose O'Hare | 22 | Niece | Waitress | Mass |
| 59 | Anna Carey | 19 | Niece | Clerk | Mass |
| 60 | Thomas Fleming | 71 | Head | Lineman | Ireland |
| 61 | Agnes Fleming | 45 | Wife | — | Ireland |
| 62 | Thomas Jr. Fleming | 16 | Son | — | Mass |
| 63 | Kathleen Fleming | 14 | Daughter | — | Mass |
| 64 | Lawrence Fleming | 12 | Son | — | Mass |
| 65 | Mary Fleming | 9 | Daughter | — | Mass |
| 66 | Arthur Fleming | 7 | Son | — | Mass |
| 67 | Anna Fleming | 5 | Daughter | — | Mass |
| 68 | Delia Hannon | 64 | Sister | Inspector | Ireland |
| 69 | Carl Shea | 37 | Head | Proprietor | Mass |
| 70 | Marguerite Shea | 35 | Wife | — | Mass |
| 71 | Arthur J. Shea | 12 | Son | — | Mass |
| 72 | Francis C. Shea | 5 | Son | — | Mass |
| 73 | Joseph Matonby | 5 | Boarder | — | Mass |
| 74 | Mary A. Gregory | 77 | Mother | — | Mass |
| 75 | Isabelle Shea | 47 | Sister | — | Nova Scotia |
| 76 | Thomas O'Donnell | 30 | Head | Policeman | Mass |
| 77 | Mary O'Donnell | 31 | Wife | — | Mass |
| 78 | Patrick Flaherty | 55 | Head | Guard | Ireland |
| 79 | Anna Flaherty | 52 | Wife | — | Ireland |
| 80 | Mary Flaherty | 15 | Daughter | — | Mass |
| 81 | Anna Flaherty | 5 | Daughter | — | Mass |
| 82 | Robert Flaherty | 7 | Son | — | Mass |
| 83 | Mary Harrington THIS PERSON | 51 | Head | Waitress | Mass |
| 84 | Mary Harrington | 21 | Daughter | — | Mass |
| 85 | Claire Harrington | 12 | Daughter | — | Mass |
| 86 | Jeanette Harrington | 5 | Daughter | — | Mass |
| 87 | Helen Crosby | 25 | Sister | Operator | Mass |
| 88 | Frank Crosby | 22 | Brother | Helper | Mass |
| 89 | John A. O'Keefe | 27 | Head | Packer | Mass |
| 90 | Margaret O'Keefe | 24 | Wife | — | Mass |
| 91 | Patrick J. Monahan | 47 | Head | Superintendent | Mass |
| 92 | Catherine Monahan | 33 | Wife | — | Mass |
| 93 | Eleanor Monahan | 15 | Daughter | — | Mass |
| 94 | Josephine Monahan | 12 | Daughter | — | Mass |
| 95 | Claire Monahan | 9 | Daughter | — | Mass |
| 96 | Mary A. Kenna | 45 | Head | — | Mass |
| 97 | Margaret Kenna | 27 | Daughter | Clerk | Mass |
| 98 | Mary Kenna | 25 | Daughter | Clerk | Mass |
| 99 | Ruth Kenna | 18 | Daughter | Machineist | Mass |
| 100 | Edna Kenna | 13 | Daughter | — | Mass |
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)