MG
Margaret Griffin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Margaret Griffin across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a daughter (b.~1908), then head of a 5-person household.
Age 32
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Advertising Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Boston |
| Est. Birth Year | ~1908 |
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 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Thomas Griffin | Head | — | 78 | ~1862 |
| Mary Griffin | Spouse | — | 73 | ~1867 |
| Mildred Griffin | Daughter | — | 38 | ~1902 |
| Mary Griffin | Daughter | — | 45 | ~1895 |
| Margaret Griffin | Daughter | — | 32 | ~1908 |
Census Appearances
1920
Suffolk, Massachusetts
Daughter, age 12
Suffolk, Massachusetts · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 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) | massachusetts |
1930
Suffolk, Massachusetts
Daughter, age 22
Suffolk, Massachusetts · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Office Clerk |
| Industry | Paper Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 32
Suffolk-County, Massachusetts · implied b. ~1908 — 5 household members
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Stenographer |
| Industry | Advertising Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | Hs 4 |
| 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 Griffin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Griffin (~0.92 confidence) and father Thomas Griffin (~0.92 confidence) and father Thomas Griffin (~0.92 confidence) and mother Mary Griffin (~0.92 confidence) and mother Mary Griffin (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Griffin
b. ~1862
Source father
● Household
· direct · ~0.92
Father
Thomas Griffin
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Thomas Griffin
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Mary Griffin
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Mary Griffin
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Griffin
Daughter · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Sibling
Mildred Griffin
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Griffin
Sibling · 1940 · age 45
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
39 people indexed on this census page (nara:1940:m-t0627-01682-00297)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Vincent Sullivan | 13 | Son | — | Massachusetts |
| 42 | Margaret Sullivan | 11 | Daughter | — | Massachusetts |
| 43 | Kenneth Sullivan | 10 | Son | — | Massachusetts |
| 44 | Donald Sullivan | 6 | Son | — | Massachusetts |
| 45 | Francis Sullivan | 4 | Son | — | Massachusetts |
| 46 | Loraine Sullivan | 2 | Daughter | — | Massachusetts |
| 47 | Ronald Sullivan | 1 | Son | — | Massachusetts |
| 48 | Royal Hobdell | 33 | Head | Pipe Fitter | Massachusetts |
| 49 | Margaret Hobdell | 31 | Wife | — | Massachusetts |
| 50 | Bernard Hobdell | 13 | Son | — | Massachusetts |
| 51 | Joseph Hobdell | 9 | Son | — | Massachusetts |
| 52 | Ann Hobdell | 5 | Daughter | — | Massachusetts |
| 54 | Myles Pendergast | 73 | Head | — | Irish Free State |
| 55 | Delia Pendergast | 70 | Wife | — | Irish Free State |
| 56 | Thomas B. Whalen | 31 | Step-son | Shipping Clerk | Massachusetts |
| 57 | Margaret Comer | 26 | Step-daughter | Registered Nurse | Massachusetts |
| 58 | Nicholas Comer | 29 | Step-son-in-law | Shipping Clerk | Massachusetts |
| 59 | Thomas B. Griffin | 78 | Head | — | Irish Free State |
| 60 | Mary Griffin | 73 | Wife | — | Irish Free State |
| 61 | Mary G. Griffin | 45 | Daughter | Elevator Operator | Massachusetts |
| 62 | Mildred Griffin | 38 | Daughter | Stenographer | Massachusetts |
| 63 | Margaret Griffin THIS PERSON | 32 | Daughter | Stenographer | Massachusetts |
| 64 | John Clancy | 38 | Head | Fireman | Irish Free State |
| 65 | Catherine Clancy | 38 | Wife | — | Irish Free State |
| 66 | Martin J. Clancy | 8 | Son | — | Massachusetts |
| 67 | John Clancy | 7 | Son | — | Massachusetts |
| 68 | Thomas Clancy | 6 | Son | — | Massachusetts |
| 69 | Mary Clancy | 5 | Daughter | — | Massachusetts |
| 70 | Peter Clancy | 36 | Brother | — | Irish Free State |
| 71 | Samuel Lipsky | 62 | Head | Cattle Dealer | Russia |
| 72 | Bessie Lipsky | 60 | Wife | — | Russia |
| 73 | Benjamin Lipsky | 38 | Son | Cattle Dealer | Massachusetts |
| 74 | Irene Lipsky | 12 | Daughter-in-law | — | Massachusetts |
| 75 | Thelma Lipsky | 10 | Daughter | — | Massachusetts |
| 76 | Pauline Lipsky | 10 | Daughter | — | Massachusetts |
| 77 | Marcia Lipsky | 8 | Daughter | — | Massachusetts |
| 78 | Eugene S. Maclean | 37 | Head | Lawn Mower Mechanic | Massachusetts |
| 79 | Clara L. Maclean | 27 | Wife | — | Massachusetts |
| 80 | Eugene Jr. Maclean | 8 | Son | — | Massachusetts |
Pedigree Summary
Margaret + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)