MF
Margaret Farrell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Margaret Farrell across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 9-person household.
Age 16
b. ~1924
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Farrell |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| Est. Birth Year | ~1924 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Mary Farrell | Spouse | — | 46 | ~1894 |
| James Farrell | Son | — | 5 | ~1935 |
| Mary Farrell | Daughter | — | 15 | ~1925 |
| Catherine Farrell | Daughter | — | 18 | ~1922 |
| Helen Farrell | Daughter | — | 9 | ~1931 |
| Anne Farrell | Daughter | — | 12 | ~1928 |
| Dominic Farrell | Head | — | 47 | ~1893 |
| Dennis Farrell | Son | — | 7 | ~1933 |
| Margaret Farrell | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 6
Suffolk, Massachusetts · implied b. ~1924 — 48 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ferrell |
| Given Name | Margaret |
| Relationship to Head | D |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 16
Suffolk-County, Massachusetts · implied b. ~1924 — 9 household members
| Surname | Farrell |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Farrell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Farrell
Daughter · 1940 · age 16 · b. ~1924 · Massachusetts
★ You are viewing this record
Sibling
Catherine Farrell
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Farrell
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Farrell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Farrell
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dennis Farrell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Farrell
Sibling · 1940 · age 15
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
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01666-00490)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bridget Stone | 69 | Head | — | Massachusetts |
| 2 | Aimee Michaud | 22 | Head | — | Canada English |
| 3 | Aretha Michaud | 65 | Wife | — | Canada English |
| 4 | Thomas Michaud | 32 | Son | Sorter | Canada English |
| 5 | Dominic Farrell | 47 | Head | — | Eire |
| 6 | Mary Farrell | 46 | Wife | — | Eire |
| 7 | Catherine Farrell | 18 | Daughter | Desk Girl | Massachusetts |
| 8 | Margaret Farrell THIS PERSON | 16 | Daughter | — | Massachusetts |
| 9 | Mary Farrell | 15 | Daughter | — | Massachusetts |
| 10 | Anne Farrell | 12 | Daughter | — | Massachusetts |
| 11 | Helen Farrell | 9 | Daughter | — | Massachusetts |
| 12 | Dennis Farrell | 7 | Son | — | Massachusetts |
| 13 | James Farrell | 5 | Son | — | Massachusetts |
| 14 | George Brown | 30 | Head | Clerk | Massachusetts |
| 15 | Loretta Brown | 25 | Wife | — | Massachusetts |
| 16 | George Brown | 5 | Son | — | Massachusetts |
| 17 | James Brown | 1 | Son | — | Massachusetts |
| 18 | William Cyrus | 43 | Head | Engineer | Virginia |
| 19 | Anna Cyrus | 40 | Wife | — | Eire |
| 20 | Lillian Cyrus | 16 | Daughter | — | Massachusetts |
| 21 | Helen Cyrus | 15 | Daughter | — | Massachusetts |
| 22 | William Cyrus | 12 | Son | — | Massachusetts |
| 23 | Leo Cyrus | 9 | Son | — | Massachusetts |
| 24 | Mary Cyrus | 7 | Daughter | — | Massachusetts |
| 25 | Rita Cyrus | 5 | Daughter | — | Massachusetts |
| 26 | Joseph Cyrus | 3 | Son | — | Massachusetts |
| 27 | Winifred Guilfoyle | 48 | Head | — | Eire |
| 28 | James Guilfoyle | 17 | Son | — | Massachusetts |
| 29 | Ruth Guilfoyle | 15 | Daughter | — | Massachusetts |
| 30 | Josephine Guilfoyle | 13 | Daughter | — | Massachusetts |
| 31 | Lillian Guilfoyle | 9 | Daughter | — | Massachusetts |
| 32 | Veronica Guilfoyle | 6 | Daughter | — | Massachusetts |
| 33 | John Powers | 42 | Head | Machinist | Massachusetts |
| 34 | Margaret Powers | 70 | Mother | — | Eire |
| 35 | James Powers | 40 | Brother | Chauffeur | Massachusetts |
| 36 | Joseph Powers | 37 | Brother | Phys. | Massachusetts |
| 37 | William Riggs | 39 | Head | Clerk | Massachusetts |
| 38 | Anna Riggs | 39 | Wife | — | Massachusetts |
| 39 | Mary Riggs | 17 | Daughter | — | Massachusetts |
| 40 | William Jr. Riggs | 14 | Son | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)