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Mary Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Carroll-County, Maryland
Our Model Tree links this Mary Lynch across the 1920, 1930 and 1940 US Censuses in Carroll-County, Maryland (XGBoost, ~Confirmed), with identified parents Wm & William — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Carroll-County, Maryland |
| Surname | Lynch |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Westminster |
| 1935 Residence (County) | Carroll |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Westminster |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lynch | Daughter | — | 21 | ~1919 |
| Mabel Lynch | Daughter | — | 19 | ~1921 |
| William Lynch | Head | — | 43 | ~1897 |
| John Bauerlin | Other | — | 21 | ~1919 |
| L Lynch | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Carroll, Maryland
Daughter, age 1
Carroll, Maryland · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Carroll, Maryland
Daughter, age 11
Carroll, Maryland · implied b. ~1919 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Carroll-County, Maryland
Daughter, age 21
Carroll-County, Maryland · implied b. ~1919 — 5 household members
| Surname | Lynch |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Westminster |
| 1935 Residence (County) | Carroll |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Wm Lynch (~0.92 confidence) and father William Lynch (~0.92 confidence) and mother L Lynch (~0.92 confidence) and mother Grace Lynch (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wm Lynch
b. ~1893
Source father
● Household
· direct · ~0.92
Father
William Lynch
b. ~1897
Source father
● Household
· direct · ~0.92
Mother
L Lynch
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Grace Lynch
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Lynch
Daughter · 1940 · age 21 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Mabel Lynch
Sibling · 1940 · age 19
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 — Carroll-County, Maryland
Open full size
1940 US Federal Census — Carroll-County, Maryland
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01544-00753)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Aubrey Coppersmith | 40 | Head | Mail Carrier | Maryland |
| 42 | Ethel P Coppersmith | 41 | Wife | — | Maryland |
| 43 | E Pauline Coppersmith | 17 | Daughter | — | Maryland |
| 44 | Barbara E Coppersmith | 11 | Daughter | — | Maryland |
| 45 | Barbara Coppersmith | 77 | Mother | — | Maryland |
| 46 | Mary E Davis | 68 | Head | — | Maryland |
| 47 | Eva M Davis | 42 | Daughter | — | Maryland |
| 48 | Rosa Simms | 58 | Lodger | — | Maryland |
| 49 | George M Dittman | 59 | Head | Contractor | Maryland |
| 50 | Sadie B Dittman | 57 | Wife | — | Maryland |
| 51 | George E Dittman | 22 | Son | Carpenter | Maryland |
| 52 | Mary I Dittman | 20 | Daughter | — | Maryland |
| 53 | Murray W Eyler | 39 | Head | Mechanic | Maryland |
| 54 | Merlin B Reed | 24 | Lodger | Mechanic | Virginia |
| 55 | Bessie L Pullen | 35 | Lodger | Supervisor | Virginia |
| 56 | Blaine H Pullen | 3 | Lodger | — | Virginia |
| 57 | Ray G Flore | 28 | Head | Presser | Maryland |
| 58 | Grace I Flore | 26 | Wife | Sewing | Maryland |
| 59 | Charles H List | 40 | Head | Plumbing | Maryland |
| 60 | Hilda E List | 36 | Wife | Upholstery | Maryland |
| 61 | Lilia E List | 15 | Daughter | — | Maryland |
| 62 | Charles A List | 13 | Son | — | Maryland |
| 63 | Harry Edward List | 12 | Son | — | Maryland |
| 64 | Paul N List | 11 | Son | — | Maryland |
| 65 | Mary G List | 9 | Daughter | — | Maryland |
| 66 | Ronald E List | 1 | Son | — | Maryland |
| 67 | William T Lynch | 43 | Head | Farmer | Maryland |
| 68 | L Grace Lynch | 46 | Wife | — | Maryland |
| 69 | Mary E Lynch THIS PERSON | 21 | Daughter | — | Maryland |
| 70 | Mabel E Lynch | 19 | Daughter | — | Maryland |
| 71 | John G Bauerlin | 21 | Laborer | Labor | Maryland |
| 72 | Elizabeth R Hall | 57 | Head | — | Maryland |
| 73 | Harold R Hall | 17 | Son | Labor | Maryland |
| 74 | Bernard M Hall | 16 | Son | Labor | Maryland |
| 75 | Arlene L Hall | 15 | Daughter | Housework | Maryland |
| 76 | Joseph M Hall | 11 | Son | — | Maryland |
| 77 | George E Hall | 52 | Lodger | Truck Driver | Maryland |
Pedigree Summary
Mary + 1 sibling
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)