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Mary Welch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this Mary Welch across the 1920, 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed), with identified parents L & L — first a spouse (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Welch |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Elect Dist 4 |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Industry | H |
| Class of Worker | 5 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Elect Dist 4 |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Welch | Daughter | — | 6 | ~1934 |
| Catherine Welch | Daughter | — | 3 | ~1937 |
| James Welch | Head | — | 32 | ~1908 |
| Mary Welch | Spouse | — | 26 | ~1914 |
Census Appearances
1920
Charles, Maryland
Daughter, age 6
Charles, Maryland · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | M. Dorothy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Mulatto |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Charles, Maryland
Daughter, age 16
Charles, Maryland · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Welch |
| Given Name | M. Winnie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Saleslady |
| Industry | General Merchandise |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Spouse, age 26
Charles-County, Maryland · implied b. ~1914 — 4 household members
| Surname | Welch |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Elect Dist 4 |
| 1935 Residence (County) | Charles |
| Industry | H |
| Class of Worker | 5 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 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 Welch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother L Welch (~0.92 confidence) and father L Welch (~0.92 confidence) and mother M Welch (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
L Welch
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
L Welch
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
M Welch
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Welch
Spouse · 1940 · age 26 · b. ~1914 · Maryland
★ 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 — Charles-County, Maryland
Open full size
1940 US Federal Census — Charles-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01546-00139)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Beulah A. Richardson | 26 | Daughter | — | Maryland |
| 42 | Beatrice T. Richardson | 4 | Grand Daughter | — | — |
| 43 | William A. Richardson | 2 | Grand Son | — | — |
| 44 | Emily O. Richardson | 1 | Grand Daughter | — | — |
| 45 | James G. Welch | 32 | Head | Farmer | Maryland |
| 46 | Mary E. Welch THIS PERSON | 26 | Wife | — | Maryland |
| 47 | Dorothy C. Welch | 6 | Daughter | — | Maryland |
| 48 | Catherine D. Welch | 3 | Daughter | — | — |
| 49 | Edmond A. Welch | 27 | Head | Farmer | Maryland |
| 50 | Eddie T. Bean | 36 | Cook | Cook | Maryland |
| 51 | Robert A. Evans | 54 | Head | Farmhand | North Carolina |
| 52 | Mary E. Evans | 41 | Wife | Maid | Maryland |
| 53 | James F. Ford | 2 | Adopted Son | — | — |
| 54 | Leon B. Simpson | 37 | Head | Farmer | Maryland |
| 55 | Thomas A. Simpson | 76 | Father | — | Maryland |
| 56 | Mary L. Simpson | 70 | Mother | — | Maryland |
| 57 | Spencer A. Simpson | 32 | Brother | Farmer | Maryland |
| 58 | John D. Thompson | 11 | Servant | — | Maryland |
| 59 | Moses N. Ford | 47 | Head | Laborer | Maryland |
| 60 | Ruth B. Ford | 32 | Wife | — | Maryland |
| 61 | Frances A. Ford | 15 | Daughter | — | Maryland |
| 62 | Lucille A. Ford | 13 | Daughter | — | Maryland |
| 63 | William J. Ford | 12 | Son | — | Maryland |
| 64 | John J. Ford | 7 | Son | — | Maryland |
| 65 | Elizabeth A. Ford | 1 | Daughter | — | — |
| 66 | William Collins | 21 | Head | Laborer | Maryland |
| 67 | Agnes R. Collins | 18 | Daughter | — | Maryland |
| 68 | William F. Collins | 1 | Adopted Son | — | — |
| 69 | Charles H. Turner | 39 | Head | Farmer | Maryland |
| 70 | Elsie R. Turner | 36 | Wife | — | Maryland |
| 71 | Thomas J. Ford | 51 | Head | Laborer | Maryland |
| 72 | Rena M. Ford | 40 | Wife | — | Maryland |
| 73 | Rebecca L. Ford | 14 | Daughter | — | Maryland |
| 74 | James M. Ford | 11 | Son | — | Maryland |
| 75 | Catherine Lancaster | 4 | Hart | — | — |
| 76 | William H. Irwin | 45 | Head | Maintenance Foreman | Maryland |
| 77 | Alene E. Irwin | 42 | Wife | — | Maryland |
| 78 | Louise M. Irwin | 18 | Daughter | — | Maryland |
| 79 | William D. Irwin | 17 | Son | Laborer | Maryland |
| 80 | Dorothy Ann Irwin | 15 | Daughter | — | Maryland |
Pedigree Summary
Mary
Gen 1 · 3 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)