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Mary Moore — 1940 US Census Record
Model Tree available1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this Mary Moore across the 1920, 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed), with identified parents Ira & William — first a daughter (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Moore |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Frederick City |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | Clerk WPA office |
| Industry | W.P.A. administration |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 980 |
| Highest Grade | C 1 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Clerk Wpa Office |
| Township / Ward | Frederick City |
| Est. Birth Year | ~1920 |
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 Moore | Daughter | — | 20 | ~1920 |
| Corinne Moore | Daughter | — | 12 | ~1928 |
| Ira Moore | Head | — | 60 | ~1880 |
| Leslie Moore | Son | — | 22 | ~1918 |
| Nancy Moore | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Frederick, Maryland
Daughter, age
Frederick, Maryland · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Moore |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Frederick, Maryland
Daughter, age 10
Frederick, Maryland · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Moore |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| 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
Frederick-County, Maryland
Daughter, age 20
Frederick-County, Maryland · implied b. ~1920 — 5 household members
| Surname | Moore |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Frederick City |
| 1935 Residence (County) | Frederick |
| Occupation | Clerk WPA office |
| Industry | W.P.A. administration |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 980 |
| Highest Grade | C 1 |
| 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 Moore across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ira Moore (~0.92 confidence) and father William Moore (~0.82 confidence) and mother Laura Moore (~0.82 confidence) and mother Pansy Moore (~0.92 confidence) and mother Nancy Moore (~0.92 confidence) and mother Nancy Moore (~0.92 confidence). The pedigree spans 2 generations with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
Ira Moore
b. ~1880
Source father
● Household
· direct · ~0.92
Father
William Moore
b. ~1845
Source father>father
● Household
· direct · ~0.82
Mother
Laura Moore
b. ~1860
Source father>mother
● Household
· direct · ~0.82
Mother
Pansy Moore
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Nancy Moore
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Nancy Moore
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Moore
Daughter · 1940 · age 20 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
Corinne Moore
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leslie Moore
Sibling · 1940 · age 22
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 — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01548-00446)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David R. Boileau | 59 | Head | Messenger Clerk | Maryland |
| 2 | F. D. White | 75 | Aunt | — | Virginia |
| 3 | Olivia S. Palmer | 27 | Head | — | Virginia |
| 4 | Harry Herbert | 55 | Head | Contract Painter | Maryland |
| 5 | Nora D. Herbert | 46 | Wife | — | Maryland |
| 6 | Lloyd H. Herbert | 21 | Son | Paycheck-Clerk | Maryland |
| 7 | Margaret L. Herbert | 18 | Daughter | Stenographer | Maryland |
| 8 | Helen Herbert | 16 | Daughter | — | Maryland |
| 9 | Barbara Jr. Herbert | 9 | Daughter | — | Maryland |
| 10 | Edgar Moore | 62 | Head | — | Maryland |
| 11 | Ruth Moore | 43 | Wife | — | Maryland |
| 12 | Edgar Jr. Moore | 14 | Son | — | Maryland |
| 13 | Ira Moore | 60 | Head | Newspaper Distributor | Maryland |
| 14 | Nancy Moore | 49 | Wife | — | Maryland |
| 15 | Mary Moore THIS PERSON | 20 | Daughter | Clerk Wpa Office | Maryland |
| 16 | Leslie Moore | 22 | Son | Apprentice Printer | Maryland |
| 17 | Corinne Moore | 12 | Daughter | — | Maryland |
| 18 | William A. Houck | 46 | Head | Machinist | Maryland |
| 19 | Jane Houck | 45 | Wife | — | Maryland |
| 20 | Walter Duvall | 53 | Boarder | Machinist | Maryland |
| 21 | William A. Ruhl | 67 | Head | Brush Maker | Maryland |
| 22 | Mary E. Ruhl | 65 | Wife | — | Maryland |
| 23 | Frances C. Snyder | 38 | Daughter | — | Maryland |
| 24 | John J. Snyder | 45 | Son-in-law | Electrician | Maryland |
| 25 | Elsie Ensworthy | 50 | Head | — | Maryland |
| 26 | Clarence Ensworthy | 22 | Son | Bus Driver | Maryland |
| 27 | Charles Ensworthy | 18 | Son | Body Builder | Maryland |
| 28 | Paul Ensworthy | 15 | Son | — | Maryland |
| 29 | Bernard Ensworthy | 13 | Son | — | Maryland |
| 30 | Ella V. Houck | 73 | Boarder | — | Maryland |
| 31 | Benjamin F. Engle | 66 | Head | Laborer | Maryland |
| 32 | Eva R. Engle | 61 | Wife | — | Maryland |
| 33 | Eleanor Buchanan | 21 | Boarder | Waitress Guest House | Maryland |
| 34 | John H. Keefer | 75 | Head | Carpenter | Maryland |
| 35 | Hada Keefer | 57 | Wife | — | Virginia |
| 36 | James F. Leather | 31 | Head | State Road Foreman | Maryland |
| 37 | Ruth Leather | 28 | Wife | — | Maryland |
| 38 | Robert Leather | 8 | Son | — | Maryland |
| 39 | Alonzo Unglebue | 53 | Father-in-law | Brush Maker | Maryland |
| 40 | Pearl Unglebue | 49 | Mother-in-law | — | Maryland |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 4 parents
~0.92
Gen 2 · 2 grandparents
~0.82
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)