MG
Margaret Griffin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Margaret Griffin across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Michael & Margaret — first a spouse (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Female
Spouse
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis City |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1919 |
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 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Griffin | Spouse | — | 21 | ~1919 |
| Helen Fretz | Other | — | 29 | ~1911 |
| Edna Bryant | Other | — | 40 | ~1900 |
| Margaret Griffin | Daughter | — | 5 | ~1935 |
| Sheila Griffin | Daughter | — | 2 | ~1938 |
| Barton Griffin | Head | — | 24 | ~1916 |
Census Appearances
1920
Marion, Indiana
Daughter, age
Marion, Indiana · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 10
Marion, Indiana · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Spouse, age 21
Marion-County, Indiana · implied b. ~1919 — 6 household members
| Surname | Griffin |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis City |
| 1935 Residence (County) | Marion |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Michael Griffin (~0.92 confidence) and mother Margaret Griffin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Griffin
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Margaret Griffin
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Griffin
Spouse · 1940 · age 21 · b. ~1919 · Indiana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01126-00534)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Edward Snider | 57 | Head | Painter | Indiana |
| 2 | Loretta Phoebe Snider | 53 | Wife | Helper | Indiana |
| 3 | Frieda Walzer | 46 | Head | Asst. Secy. | Indiana |
| 4 | Barton Griffin | 24 | Head | Salesman | Indiana |
| 5 | Margaret Griffin THIS PERSON | 21 | Wife | — | Indiana |
| 6 | Margaret Mary Griffin | 5 | Daughter | — | Indiana |
| 7 | Sheila Griffin | 2 | Daughter | — | Indiana |
| 8 | Helen K. Fretz | 29 | Housekeeper | Housekeeper | Indiana |
| 9 | Edna Bryant | 40 | Sister | Beauty Operator | Indiana |
| 10 | Gresten W. Bryant | 29 | Head | Knitter | Kentucky |
| 11 | Lucille A. Bryant | 29 | Wife | — | Indiana |
| 12 | Diane Bryant | 7 | Daughter | — | Indiana |
| 13 | David Bryant | 3 | Son | — | Indiana |
| 14 | Albert Beeke | 26 | Head | Shipping Clerk | Belgium |
| 15 | Dolores Beeke | 21 | Daughter | Waitress | Indiana |
| 16 | Nancy Beeke | 2 | Daughter | — | Indiana |
| 17 | Otto Maple | 33 | Head | Cashier | Indiana |
| 18 | Thea Martha Maple | 25 | Wife | Receiver | Indiana |
| 19 | Joseph Maple | 24 | Head | Salesman | Indiana |
| 20 | Wilbur Robert | 34 | Head | Cook | Indiana |
| 21 | Emma Jane Robert | 23 | Wife | Silk Finisher | Indiana |
| 22 | Frank Robert | 13 | Son | — | Indiana |
| 23 | Dorothy Robert | 10 | Daughter | — | Indiana |
| 24 | William Robert | 15 | Son | — | Indiana |
| 25 | Betty Robert | 16 | Daughter | — | Indiana |
| 26 | Michael Sommers | 53 | Head | Supervisor | Indiana |
| 27 | Leona Sommers | 50 | Wife | — | Indiana |
| 28 | Robert Sommers | 24 | Son | Clerk | Indiana |
| 29 | Charles Sommers | 22 | Son | Grocery Clerk | Indiana |
| 30 | Vincent Sommers | 18 | Son | — | Indiana |
| 31 | Mary Sommers | 15 | Daughter | — | Indiana |
| 32 | Alice Mccormack | 52 | H. L. | Tailoress | Indiana |
| 33 | James Mack Dunn | 26 | Head | Driver | Indiana |
| 34 | Zina Maxine Dunn | 23 | Wife | — | Indiana |
| 35 | Zina Carol Dunn | 1 | Daughter | — | Indiana |
| 36 | Ernest Melton | 39 | Head | Truck Driver | Indiana |
| 37 | Lella Melton | 35 | Wife | Waitress | Indiana |
| 38 | Charles Pope | 46 | Head | Veterinarian | Georgia |
| 39 | Louise Pope | 38 | Wife | Credit Office Clerk | Indiana |
| 40 | Gayle Pope | 17 | Daughter | Waitress | Indiana |
Pedigree Summary
Margaret
Gen 1 · 2 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)