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Mary Butler — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this Mary Butler across the 1920, 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1904), then head of a 7-person household.
Age 36
b. ~1904
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Butler |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 1 |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Election District 1 |
| Est. Birth Year | ~1904 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Butler | Daughter | — | 13 | ~1927 |
| Theresa Butler | Daughter | — | 10 | ~1930 |
| Joseph Butler | Head | — | 41 | ~1899 |
| Francis Butler | Son | — | 20 | ~1920 |
| Alvin Butler | Son | — | 4 | ~1936 |
| Brent Butler | Son | — | 6 | ~1934 |
| Mary Butler | Spouse | — | 36 | ~1904 |
Census Appearances
1920
Charles, Maryland
Spouse, age 18
Charles, Maryland · implied b. ~1902 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Butler |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 18 |
| Marital Status | Married |
| 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
Spouse, age 28
Charles, Maryland · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Butler |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 15 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Spouse, age 36
Charles-County, Maryland · implied b. ~1904 — 7 household members
| Surname | Butler |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Election District 1 |
| 1935 Residence (County) | Charles |
| Highest Grade | No 3 |
| 1935 Residence | Maryland |
| 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 Butler across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Butler
Spouse · 1940 · age 36 · b. ~1904 · Maryland
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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
36 people indexed on this census page (nara:1940:m-t0627-01546-00046)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dr Earnest Spencer | 35 | Brother | Doctor | Maryland |
| 42 | Elizabeth Young | 68 | Head | Housework | Maryland |
| 43 | William Young | 28 | Head | Laborer | Maryland |
| 44 | Elizabeth Young | 25 | Wife | — | Maryland |
| 49 | Joseph Winkler | 60 | Head | Blacksmith | Maryland |
| 50 | Virgie Winkler | 52 | Wife | — | Maryland |
| 51 | James H. Elder | 44 | Head | Farmer | Maryland |
| 52 | Mabel S. Elder | 35 | Wife | — | Maryland |
| 53 | Alice R. Bean | 19 | Sister in law | Operator | Maryland |
| 54 | Lucile Short | 49 | Head | — | Maryland |
| 55 | Dorothy Short | 23 | daughter | Maid | Maryland |
| 56 | Calvin Short | 18 | son | Laborer | Maryland |
| 57 | Maurice Short | 14 | son | — | Maryland |
| 58 | Gladys Maddy | 30 | Lodger | Teacher | Maryland |
| 59 | Marie Shepherd | 26 | Lodger | Teacher | Maryland |
| 60 | Portia Miles | 24 | Lodger | Teacher | Maryland |
| 61 | Raymond Johnson | 28 | Lodger | Teacher | Maryland |
| 62 | Katie Simms | 48 | Head | Cook | Maryland |
| 63 | Joe Simms | 26 | son | Laborer | Maryland |
| 64 | Percy Simms | 13 | son | — | Maryland |
| 65 | Edward Simms | 9 | son | — | Maryland |
| 66 | John Miner | 46 | brother | Laborer | Maryland |
| 67 | Linwood Farmer | 25 | Lodger | Laborer | Maryland |
| 68 | Edward Norris | 43 | Head | Helper | Maryland |
| 69 | Florence Norris | 15 | Wife | — | Maryland |
| 70 | Hazel Norris | 6 | daughter | — | Maryland |
| 71 | Annie Norris | 6 | son | — | Maryland |
| 72 | Elroy Norris | 3 | daughter | — | Maryland |
| 73 | Joseph Norris | 2 | son | — | Maryland |
| 74 | Joseph Butler | 41 | Head | Farmer | Maryland |
| 75 | Mary Butler THIS PERSON | 36 | Wife | — | Maryland |
| 76 | Francis Butler | 20 | son | — | Maryland |
| 77 | Margaret Butler | 13 | daughter | — | Maryland |
| 78 | Theresa Butler | 10 | daughter | — | Maryland |
| 79 | Brent Butler | 6 | son | — | Maryland |
| 80 | Alvin Butler | 4 | son | — | Maryland |
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)