MD
Mary Day — 1920 US Census Record
Model Tree available1920 United States Federal Census · Montgomery, Maryland
Our Model Tree links this Mary Day across the 1910, 1920 and 1930 US Censuses in Montgomery, Maryland (XGBoost, ~Confirmed), with identified parents Charles & Robert — first a daughter (b.~1903), then head of a 5-person household.
Age 17
b. ~1903
Female
Daughter
Born: Maryland
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Montgomery, Maryland |
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | 7Th Election District Bethesda |
| Est. Birth Year | ~1903 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Day | Daughter | — | 17 | ~1903 |
| James Day | Head | — | 61 | ~1859 |
| Arthur Day | Son | — | 22 | ~1898 |
| Guy Day | Son | — | 19 | ~1901 |
| Rachael Day | Spouse | — | 58 | ~1862 |
Census Appearances
1910
Montgomery, Maryland
Daughter, age 8
Montgomery, Maryland · implied b. ~1902 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Montgomery, Maryland
Daughter, age 17
Montgomery, Maryland · implied b. ~1903 — 5 household members
| Surname | Day |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Montgomery, Maryland
Daughter, age 28
Montgomery, Maryland · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Mamie E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| 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 |
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 Day across 3 US Census years (1910, 1920 and 1930) in Montgomery, Maryland, using XGBoost record linkage. Identified parents: father Charles Day (~0.92 confidence) and father Robert Dodson (~0.92 confidence) and father James Day (~0.92 confidence) and mother Rachael Day (~0.92 confidence) and mother Annie Dodson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Day
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Robert Dodson
b. ~1859
Source father
● Household
· direct · ~0.92
Father
James Day
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Rachael Day
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Annie Dodson
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Day
Daughter · 1920 · age 17 · b. ~1903 · Maryland
★ You are viewing this record
Sibling
Guy Day
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Day
Sibling · 1920 · 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
1920 US Federal Census — Montgomery, Maryland
Open full size
1920 US Federal Census — Montgomery, Maryland
Page Contents
47 people indexed on this census page (ia:1920:14thcensusofpopu671unit:0709)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John P Higgins | 54 | Head | Banker | Maryland |
| 52 | Clara Higgins | 50 | Wife | None | District of Col |
| 53 | John J Higgins | 25 | Son | None | Maryland |
| 54 | William S Higgins | 23 | Son | None | Maryland |
| 55 | Arthur Carroll | 52 | Head | None | Georgia |
| 56 | Annie M Carroll | 50 | Wife | None | Washington DC |
| 57 | Helen Carroll | 13 | Daughter | None | Washington DC |
| 58 | Arthur Carroll | 9 | Son | None | Washington DC |
| 59 | Fred Reed | 45 | Head | Salesman | Ohio |
| 60 | Minnie Reed | 38 | Wife | None | Washington DC |
| 61 | George B Reed | 21 | Son | Clerk | Maryland |
| 62 | Marie B Reed | 11 | Daughter | None | Maryland |
| 63 | Cornelia E Reed | 7 | Daughter | None | Maryland |
| 64 | Elizabeth Lochbach | 41 | Sister in law | None | Maryland |
| 65 | James Day | 61 | Head | None | Maryland |
| 66 | Rachael Day | 58 | Wife | None | Maryland |
| 67 | Arthur Day | 22 | Son | Clerk | Maryland |
| 68 | Guy Day | 19 | Son | Laborer | Maryland |
| 69 | Mary Day THIS PERSON | 17 | Daughter | None | Maryland |
| 70 | Mallory Williams | 51 | Head | Book Store | Maryland |
| 71 | Blanche Williams | 45 | Wife | None | Maryland |
| 72 | Eugene F Williams | 15 | Son | Messenger | Maryland |
| 73 | Robert E Williams | 12 | Son | None | Maryland |
| 74 | Josephine Williams | 13 | Daughter | None | Maryland |
| 75 | H H Councilman | 50 | Head | Contractor | Maryland |
| 76 | Dora S Councilman | 32 | Wife | None | Maryland |
| 77 | James Councilman | 27 | Son | Carpenter | Maryland |
| 78 | Garfield Nabors | 40 | Head | Truckman | South Carolina |
| 79 | Mary Nabors | 15 | Daughter | None | South Carolina |
| 80 | James Nabors | 14 | Son | None | Maryland |
| 81 | Joseph Nabors | 10 | Son | None | Maryland |
| 82 | John Nabors | 2 | Son | None | Maryland |
| 83 | Charles Pugh | 24 | Head | Carpenter | Virginia |
| 84 | Blanche Pugh | 25 | Wife | None | Maryland |
| 85 | Catherine Pugh | 4 | Daughter | None | Maryland |
| 86 | Elizabeth Pugh | 2 | Daughter | None | Maryland |
| 87 | Elias Pugh | 49 | Head | None | Virginia |
| 88 | Richard Pugh | 17 | Son | Truckman | Virginia |
| 89 | William Bates | 41 | Head | Salesman | Maryland |
| 90 | Mary Bates | 41 | Wife | None | Maryland |
| 91 | Helen Bates | 16 | Daughter | None | Maryland |
| 92 | Lucile Bates | 12 | Daughter | None | Maryland |
| 93 | Catherine Bates | 10 | Daughter | None | Maryland |
| 94 | Lona Councilman | 60 | Head | None | New York |
| 95 | Earl J Councilman | 23 | Son | Laborer | Maryland |
| 96 | Ralph Councilman | 19 | Son | None | Maryland |
| 97 | Audrey Councilman | 14 | Daughter | None | Washington DC |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)