MK
Margaret Kennedy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Margaret Kennedy across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (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 | Middlesex, Massachusetts |
| Surname | Kennedy |
| Given Name | Margaret |
| 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 | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | City Of Cambridge |
| 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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Mary Kennedy | Daughter | — | 27 | ~1903 |
| Joseph Kennedy | Head | — | 53 | ~1877 |
| Charles Kennedy | Son | — | 22 | ~1908 |
| Joseph Kennedy | Son | — | 25 | ~1905 |
| Margaret Kennedy | Spouse | — | 52 | ~1878 |
Census Appearances
1910
Middlesex, Massachusetts
Spouse, age 30
Middlesex, Massachusetts · implied b. ~1880 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 2 |
| Children Born | 0 |
| Children Living | 0 |
| Year of Immigration | 1895 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Middlesex, Massachusetts
Spouse, age 42
Middlesex, Massachusetts · implied b. ~1878 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Margaret A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1896 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1909 |
| Birthplace (normalized) | ireland |
1930
Middlesex, Massachusetts
Spouse, age 52
Middlesex, Massachusetts · implied b. ~1878 — 5 household members
| Surname | Kennedy |
| Given Name | Margaret |
| 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 | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| 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 Margaret Kennedy across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
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This person
Anchor record
Margaret Kennedy
Spouse · 1930 · age 52 · b. ~1878 · 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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:15thcensuspopula917unit:0442)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Justin Graham | 58 | Head | Salesman | Maine |
| 2 | Mary Graham | 55 | Wife | — | Maine |
| 3 | James A. Graham | 23 | Son | Salesman | Maine |
| 4 | Frederick Graham | 21 | Son | Clerk | Maine |
| 5 | Mary E. Graham | 18 | Daughter | — | Maine |
| 6 | Justin Graham | 15 | Son | — | Maine |
| 7 | Joseph Kennedy | 53 | Head | Salesman | Ireland |
| 8 | Margaret Kennedy THIS PERSON | 52 | Wife | — | Ireland |
| 9 | Mary Kennedy | 27 | Daughter | — | Massachusetts |
| 10 | Joseph Kennedy | 25 | Son | Clerk | Massachusetts |
| 11 | Charles Kennedy | 22 | Son | — | Massachusetts |
| 12 | James F. Kiley | 40 | Head | Contractor | Massachusetts |
| 13 | Mary E. Kiley | 40 | Wife | — | Massachusetts |
| 14 | James F. Jr. Kiley | 13 | Son | — | Massachusetts |
| 15 | Barbara Kiley | 10 | Daughter | — | Massachusetts |
| 16 | Justin Kiley | 5 | Son | — | Massachusetts |
| 17 | David R. Grace | 55 | Head | Musician | Ireland |
| 18 | Sarah Grace | 53 | Wife | — | Ireland |
| 19 | David R. Jr. Grace | 21 | Son | — | Massachusetts |
| 20 | Isabella Grace | 19 | Daughter | — | Massachusetts |
| 21 | Andrew O'Connor | 54 | Head | — | Ireland |
| 22 | Mary O'Connor | 50 | Wife | — | Ireland |
| 23 | Andrew O'Connor | 27 | Son | Salesman | Massachusetts |
| 24 | Joseph O'Connor | 25 | Son | Clerk | Massachusetts |
| 25 | Mary O'Connor | 21 | Daughter | Stenographer | Massachusetts |
| 26 | Margaret O'Connor | 18 | Daughter | — | Massachusetts |
| 27 | John J. Cummings | 41 | Head | Salesman | Massachusetts |
| 28 | Mary Cummings | 40 | Wife | — | Massachusetts |
| 29 | John J. Jr. Cummings | 13 | Son | — | Massachusetts |
| 30 | Helen Cummings | 12 | Daughter | — | Massachusetts |
| 31 | Mary Cummings | 11 | Daughter | — | Massachusetts |
| 32 | James Duffy | 50 | Head | Plumber | Massachusetts |
| 33 | Mary Duffy | 48 | Wife | — | Massachusetts |
| 34 | James J. Duffy | 17 | Son | — | Massachusetts |
| 35 | Mary E. Duffy | 15 | Daughter | — | Massachusetts |
| 36 | James O'Brien | 52 | Head | — | Ireland |
| 37 | Margaret O'Brien | 52 | Wife | — | Ireland |
| 38 | John Doyle | 42 | Head | Salesman | Massachusetts |
| 39 | Mary Doyle | 40 | Wife | — | Massachusetts |
| 40 | John Jr. Doyle | 14 | Son | — | Massachusetts |
| 41 | Mary Doyle | 12 | Daughter | — | Massachusetts |
| 42 | James Doyle | 10 | Son | — | Massachusetts |
| 43 | William Doyle | 8 | Son | — | Massachusetts |
| 44 | William Sullivan | 65 | Head | — | Massachusetts |
| 45 | Mary Sullivan | 60 | Wife | — | Massachusetts |
| 46 | William Jr. Sullivan | 35 | Son | — | Massachusetts |
| 47 | Mary E. Sullivan | 33 | Daughter | — | Massachusetts |
| 48 | Richard Sullivan | 31 | Son | — | Massachusetts |
| 49 | Helen Sullivan | 28 | Daughter | — | Massachusetts |
| 50 | James Sullivan | 25 | Son | — | Massachusetts |
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)