RL
Robert Lynch — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Ohio
Our Model Tree links this Robert Lynch across the 1930 and 1940 US Censuses in Mercer-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 12-person household.
Age 18
b. ~1922
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Ohio |
| Surname | Lynch |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Celina |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Celina |
| Est. Birth Year | ~1922 |
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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Viola Lynch | Daughter | — | 7 | ~1933 |
| Thelma Lynch | Daughter | — | 16 | ~1924 |
| Marjorie Lynch | Daughter | — | 4 | ~1936 |
| Omer Lynch | Head | — | 55 | ~1885 |
| Christina Hopple | Other | — | 82 | ~1858 |
| Richard Lynch | Son | — | 13 | ~1927 |
| Howard Lynch | Son | — | 8 | ~1932 |
| Herbert Lynch | Son | — | 19 | ~1921 |
| Robert Lynch | Son | — | 18 | ~1922 |
| Patricia Lynch | Son | — | 7 | ~1933 |
| Jack Lynch | Son | — | 4 | ~1936 |
| May Lynch | Spouse | — | 55 | ~1885 |
Census Appearances
1930
Mercer, Ohio
Son, age 7
Mercer, Ohio · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mercer-County, Ohio
Son, age 18
Mercer-County, Ohio · implied b. ~1922 — 12 household members
| Surname | Lynch |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Celina |
| 1935 Residence (County) | Mercer |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Robert Lynch across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Lynch
Son · 1940 · age 18 · b. ~1922 · Ohio
★ You are viewing this record
Sibling
Viola Lynch
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Lynch
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Lynch
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Lynch
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Lynch
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Lynch
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Lynch
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jack Lynch
Sibling · 1940 · age 4
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 — Mercer-County, Ohio
Open full size
1940 US Federal Census — Mercer-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03114-00416)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald Pickett | 32 | Head | Truck Driver | Ohio |
| 42 | Leona Pickett | 30 | Wife | — | Ohio |
| 43 | Kenneth Jamieson | 31 | Head | Manager | Ohio |
| 44 | Aldora Jamieson | 31 | Wife | — | Ohio |
| 45 | Judy Jamieson | 5 | Daughter | — | Ohio |
| 46 | Linda Lou Jamieson | 3 | Daughter | — | Ohio |
| 47 | — | None | — | — | — |
| 48 | Enos Place | 64 | Head | Laborer | Ohio |
| 49 | Anna O Place | 55 | Wife | — | Ohio |
| 50 | Harry Browder | 29 | Son-in-law | Canner | Ohio |
| 51 | Floris Browder | 25 | Daughter | — | Ohio |
| 52 | Gertrude Browder | 5 | Granddaughter | — | Ohio |
| 53 | Rose Marie Browder | 4 | Granddaughter | — | Ohio |
| 54 | Harry Browder | 2 | Grandson | — | Ohio |
| 55 | Gaylord Browder | 1 | Grandson | — | Ohio |
| 56 | Ersie Starr | 19 | Daughter | — | Ohio |
| 57 | Agnes Hendershot | 66 | Head | — | Indiana |
| 58 | Alphons Lynch | 27 | Head | Laborer | Ohio |
| 59 | Lura B Lynch | 25 | Wife | — | Ohio |
| 60 | Rosie Lee Lynch | 3 | Daughter | — | Ohio |
| 61 | Tracy Lynn Lynch | 2 | Daughter | — | Ohio |
| 62 | Omer D Lynch | 55 | Head | — | Ohio |
| 63 | May Lynch | 55 | Wife | — | Ohio |
| 64 | Herbert Lynch | 19 | Son | Laborer | Ohio |
| 65 | Robert Lynch THIS PERSON | 18 | Son | — | Ohio |
| 66 | Thelma Lynch | 16 | Daughter | — | Ohio |
| 67 | Richard Lynch | 13 | Son | — | Ohio |
| 68 | Howard Lynch | 8 | Son | — | Ohio |
| 69 | Viola Lynch | 7 | Daughter | — | Ohio |
| 70 | Patricia Lynch | 7 | Son | — | Ohio |
| 71 | Marjorie Lynch | 4 | Daughter | — | Ohio |
| 72 | Christina Hopple | 82 | Mother-in-law | — | Ohio |
| 73 | Jack Lynch | 4 | Son | — | Ohio |
| 74 | Noah Ellis | 50 | Head | Carpenter | Ohio |
| 75 | Cecil Ellis | 48 | Wife | — | Ohio |
| 76 | Margaret Ellis | 21 | Daughter | — | Ohio |
| 77 | Robert Ellis | 18 | Son | — | Ohio |
| 78 | Flossie Ellis | 16 | Daughter | — | Ohio |
| 79 | Bennie Ellis | 12 | Son | — | Ohio |
| 80 | Catherine Stevens | 84 | Head | — | Ohio |
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)