JM
James Mcgrath — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this James Mcgrath across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Peter & Margaret — first a head (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | McGrath |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Repairer |
| Industry | Tire & Radiator |
| Class of Worker | PW |
| Hours Worked | 34 |
| Income (1939) | 1100 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Repairer |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1914 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Barbara Mcgrath | Daughter | — | 1 | ~1939 |
| James Mcgrath | Head | — | 26 | ~1914 |
| Robert Mcgrath | Son | — | 5 | ~1935 |
| Rose Mcgrath | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Marion, Indiana
Son, age 6
Marion, Indiana · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| 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
Son, age 16
Marion, Indiana · implied b. ~1914 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| 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
Head, age 26
Marion-County, Indiana · implied b. ~1914 — 4 household members
| Surname | McGrath |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Repairer |
| Industry | Tire & Radiator |
| Class of Worker | PW |
| Hours Worked | 34 |
| Income (1939) | 1100 |
| Highest Grade | H 4 |
| 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 James Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peter Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Mcgrath
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mcgrath
Head · 1940 · age 26 · b. ~1914 · 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-t0627-01130-00232)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Bruckman | 49 | Head | Salesman | Indiana |
| 2 | Mildred Bruckman | 48 | Wife | — | Indiana |
| 3 | Christine Bruckman | 19 | Daughter | — | Indiana |
| 4 | George Bruckman | 18 | Son | — | Indiana |
| 5 | Joan Bruckman | 13 | Daughter | — | Indiana |
| 6 | John R. Bruckman | 9 | Son | — | Indiana |
| 7 | George H. Bruckman | 80 | Father | — | Ohio |
| 8 | James Mcgrath THIS PERSON | 26 | Head | Repairer | Indiana |
| 9 | Rose Mcgrath | 28 | Wife | Typist-Biller | Indiana |
| 10 | Robert J. Mcgrath | 5 | Son | — | Indiana |
| 11 | Barbara Mcgrath | 1 | Daughter | — | Indiana |
| 12 | George A. Duffy | 66 | Head | Garment Cutter | Indiana |
| 13 | Ida M. Duffy | 57 | Wife | — | Indiana |
| 14 | Alfred Matthews | 54 | Head | Extract Oper | Tennessee |
| 15 | Willie Matthews | 51 | Wife | — | Tennessee |
| 16 | Walter Matthews | 17 | Son | — | Tennessee |
| 17 | Thelma Matthews | 13 | Daughter | — | Tennessee |
| 18 | Mary E. Matthews | 25 | Daughter | — | Tennessee |
| 19 | William Matthews | 22 | Son | — | Tennessee |
| 20 | Jewell A. Dobson | 56 | Head | — | Indiana |
| 21 | Effie Dobson | 50 | Wife | — | Indiana |
| 22 | Virginia Dobson | 18 | Daughter | Clerical | Indiana |
| 23 | Ileen Miles | 39 | Head | — | Kentucky |
| 24 | Robert Miles | 12 | Son | — | Indiana |
| 25 | Claude Hennington | 24 | Head | Metal Polisher | Indiana |
| 26 | Francis Hennington | 23 | Wife | — | Indiana |
| 27 | Monroe Rucks | 34 | Head | Physician | Indiana |
| 28 | Carolyn Rucks | 33 | Wife | — | California |
| 29 | James Rucks | 4 | Son | — | New Mexico |
| 30 | Jerry Rucks | 1 | Son | — | Arizona |
| 31 | Wilma Seward | 48 | Lodger | Salesman | Ohio |
| 32 | Eugene E. Foster | 60 | Head | Social Worker | Ohio |
| 33 | Robt. E. Shoemaker | 28 | Lodger | Teacher | Indiana |
| 34 | Fred H. Stanford | 50 | Head | Lumber | Arkansas |
| 35 | Zora Stanford | 45 | Wife | — | Mississippi |
| 36 | Marion Stanford | 19 | Daughter | — | Indiana |
| 37 | Fred Jr. Stanford | 17 | Son | — | Indiana |
| 38 | William R. Stanford | 15 | Son | — | Indiana |
| 39 | Carroll Hulls | 44 | Head | Electrician | Indiana |
| 40 | Alice Hulls | 38 | Wife | — | Ohio |
Pedigree Summary
James
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)