ML
Mary Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Lynch across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Clarence & Katie — first a daughter (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Lynch |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1917 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lynch | Daughter | — | 23 | ~1917 |
| Clarence Lynch | Head | — | 50 | ~1890 |
| Leonard Lynch | Son | — | 21 | ~1919 |
| Harold Lynch | Son | — | 20 | ~1920 |
| Kate Lynch | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Marion, Indiana
Daughter, age 3
Marion, Indiana · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 13
Marion, Indiana · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 23
Marion-County, Indiana · implied b. ~1917 — 5 household members
| Surname | Lynch |
| Given Name | Mary Frances |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Highest Grade | No 8 |
| 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 Mary Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Lynch (~0.92 confidence) and mother Katie Lynch (~0.92 confidence) and mother Kate Lynch (~0.92 confidence) and mother Katie Lynch (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Lynch
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Katie Lynch
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Kate Lynch
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Katie Lynch
b. ~1900
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lynch
Daughter · 1940 · age 23 · b. ~1917 · Indiana
★ You are viewing this record
Sibling
Leonard Lynch
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Lynch
Sibling · 1940 · age 20
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01126-00458)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clarence Lynch | 50 | Head | Baker | Indiana |
| 42 | Kate Lynch | 51 | Wife | — | Indiana |
| 43 | Mary Frances Lynch THIS PERSON | 23 | Daughter | — | Indiana |
| 44 | Leonard Lynch | 21 | Son | — | Indiana |
| 45 | Harold Lynch | 20 | Son | Truck Driver | Indiana |
| 46 | Ernest Conceller | 39 | Head | Truck Driver | Indiana |
| 47 | Paul Whitecotton | 30 | Head | Cement Mixer | Kentucky |
| 48 | Emma Whitecotton | 43 | Wife | — | Kentucky |
| 49 | James Whitecotton | 17 | Son | — | Kentucky |
| 50 | Charles Whitecotton | 15 | Son | Salesman | Kentucky |
| 51 | William Whitecotton | 13 | Son | — | Indiana |
| 52 | Herbert Whitecotton | 11 | Son | — | Kentucky |
| 53 | Theodore Whitecotton | 8 | Son | — | Indiana |
| 54 | George Bailey | 17 | Lodger | Truck Loader | Indiana |
| 55 | Chris Young | 32 | Head | Sheet Metal Worker | Indiana |
| 56 | Anna Young | 31 | Wife | — | Indiana |
| 57 | Keith Young | 6 | Son | — | Indiana |
| 58 | Kenneth Young | 6 | Son | — | Indiana |
| 59 | Allen Kraft | 34 | Head | Lecturer | Michigan |
| 60 | Hazel Kraft | 33 | Wife | — | Michigan |
| 61 | Donald Kraft | 10 | Son | — | Illinois |
| 62 | Elenor Kraft | 7 | Daughter | — | Illinois |
| 63 | Mary Kraft | 6 | Daughter | — | Illinois |
| 64 | Myrtle Kraft | 6 | Daughter | — | Illinois |
| 65 | Johnnie Kraft | 3 | Son | — | Illinois |
| 66 | Morris Holt | 24 | Head | Buffer | Indiana |
| 67 | Shirley Holt | 20 | Wife | Saleslady | Indiana |
| 68 | Virginia Wineinger | 19 | Lodger | Saleslady | Indiana |
| 70 | Herod Rains | 54 | Head | Laborer | Kentucky |
| 71 | Christine Rains | 41 | Wife | Ironer | Kentucky |
| 72 | Herod R. Rains | 18 | Son | Driller | Kentucky |
| 73 | Vaughn Muelis | 31 | Head | Truck Driver | Indiana |
| 74 | Lulu Muelis | 29 | Wife | — | Indiana |
| 75 | Dorothy Muelis | 5 | Daughter | — | Indiana |
| 76 | Orville Garnett | 21 | Lodger | Clerk | Indiana |
| 77 | B. M. Hollansworth | 62 | Head | — | West Virginia |
| 78 | Laura Hollansworth | 50 | Wife | — | West Virginia |
| 79 | B. M. Jr. Hollansworth | 25 | Son | Designer | West Virginia |
| 80 | Jean Hollansworth | 12 | Daughter | — | West Virginia |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 4 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)