MA
Mary Arthur — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Mary Arthur across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Alexander & Elden — first a daughter (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Arthur |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore city |
| Additional Details | |
| Occupation | Trained Nurse |
| Industry | Private Duty |
| Class of Worker | OA |
| Hours Worked | 62 |
| Income (1939) | 435 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Trained Nurse |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1911 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Arthur | Head | — | 63 | ~1877 |
| Mary Arthur | Daughter | — | 29 | ~1911 |
| Francis Arthur | Son | — | 25 | ~1915 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 8
Baltimore, Maryland · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arthur |
| Given Name | Margaret J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| 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
Baltimore, Maryland
Daughter, age 18
Baltimore, Maryland · implied b. ~1912 — 25 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arthur |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| 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
Baltimore-City-County, Maryland
Daughter, age 29
Baltimore-City-County, Maryland · implied b. ~1911 — 3 household members
| Surname | Arthur |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore city |
| Occupation | Trained Nurse |
| Industry | Private Duty |
| Class of Worker | OA |
| Hours Worked | 62 |
| Income (1939) | 435 |
| Highest Grade | No 4 |
| 1935 Residence | Same house |
| 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 Arthur across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alexander Hennie (~0.92 confidence) and father Elden Arthur (~0.92 confidence) and father Haden Arthur (~0.92 confidence) and father Peter Roletsky (~0.92 confidence) and father Robert Arthur (~0.92 confidence) and father Thomas Daugherty (~0.92 confidence) and mother Elizabeth Arthur (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alexander Hennie
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Elden Arthur
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Haden Arthur
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Peter Roletsky
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Robert Arthur
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Thomas Daugherty
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Arthur
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Arthur
Daughter · 1940 · age 29 · b. ~1911 · Maryland
★ You are viewing this record
Sibling
Francis Arthur
Sibling · 1940 · age 25
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
24 people indexed on this census page (nara:1940:m-t0627-01518-00031)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Russell E Allen | 53 | Lodger | — | Massachusetts |
| 2 | Peter G Arthur | 61 | Lodger | — | Virginia |
| 3 | George C Emrine | 47 | Lodger | Metal Worker | Maryland |
| 4 | Claude H Huffines | 55 | Head | Carpenter | N. Carolina |
| 5 | Alice L Huffines | 50 | Wife | — | Virginia |
| 6 | Claude B Huffines | 28 | Son | Truck Driver | Virginia |
| 7 | Doris W Huffines | 21 | Daughter | Machine Operator | Maryland |
| 8 | Irwin J Huffines | 20 | Son | Seamstress | Maryland |
| 9 | Francis S Huffines | 17 | Son | Salesman | Virginia |
| 10 | Alvin P Peters | 32 | Lodger | Machinist | Maryland |
| 11 | Edith Mary Snook | 60 | Head | — | Maryland |
| 12 | Walter Snook | 45 | Brother | — | Maryland |
| 13 | Gertrude Ahearn | 23 | Niece | Waitress | Connecticut |
| 14 | George B Carter | 58 | Head | Attendant | Ohio |
| 15 | Grace Carter | 54 | Wife | — | Ohio |
| 16 | M. Grace Carter | 20 | Daughter | Clipper | Pennsylvania |
| 17 | William R Carter | 16 | Son | — | Maryland |
| 18 | Norman Price | 49 | Lodger | Machinist Helper | Pennsylvania |
| 19 | James G Mccann | 78 | Head | — | Maryland |
| 20 | Mary E Mccann | 72 | Wife | — | England |
| 21 | Beatrice Mccann | 48 | Daughter | — | Maryland |
| 22 | Robert P Arthur | 63 | Head | Proprietor | Maryland |
| 23 | Mary Margaret Arthur THIS PERSON | 29 | Daughter | Trained Nurse | Maryland |
| 24 | Francis M Arthur | 25 | Son | Clerk | Maryland |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 7 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)