BM
Bertha Martin — 1920 US Census Record
Model Tree available1920 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Bertha Martin across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents Charles & Sarah — first a daughter (b.~1917), then head of a 3-person household.
Age 3
b. ~1917
Female
Daughter
Born: Maryland
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Baltimore, Maryland |
| Surname | Martin |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1917 |
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 1920 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Stella Martin | Spouse | — | 23 | ~1897 |
| John Martin | Head | — | 29 | ~1891 |
| Bertha Martin | Daughter | — | 3 | ~1917 |
Census Appearances
1920
Baltimore, Maryland
Daughter, age 3
Baltimore, Maryland · implied b. ~1917 — 3 household members
| Surname | Martin |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Daughter, age 14
Baltimore, Maryland · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martini |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Spouse, age 25
Baltimore-City-County, Maryland · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinson |
| Given Name | Beatrice |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Hours Worked | 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 Bertha Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Martini (~0.92 confidence) and mother Sarah Martini (~0.92 confidence) and father John Martin (~0.92 confidence) and mother Stella Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Martini
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Sarah Martini
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
John Martin
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Stella Martin
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Bertha Martin
Daughter · 1920 · age 3 · b. ~1917 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Baltimore, Maryland
Open full size
1920 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu665unit:0847)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John J. Farnan | 40 | Head | Clerk | Maryland |
| 52 | Bessie K. Farnan | 35 | Wife | — | Dist of Col. |
| 53 | Ellen Farnan | 14 | Daughter | — | Maryland |
| 54 | Charles H. Henkel | 42 | Head | Superintendent | Germany |
| 55 | Sadie Henkel | 28 | Wife | — | Pennsylvania |
| 56 | Ray Henkel | 12 | Daughter | — | Maryland |
| 57 | Howard Yeager | 50 | Brother in Law | Conductor | Maryland |
| 58 | James E. Warfield | 39 | Boarder | Conductor | Maryland |
| 59 | Mamie Warfield | 33 | Boarder | — | Maryland |
| 60 | Martin Wynne | 43 | Head | Chauffeur | Ireland |
| 61 | Mary Wynne | 40 | Wife | — | Ireland |
| 62 | William Wynne | 39 | Brother | Porter | Ireland |
| 63 | Arthur Horman | 45 | Head | Messenger | Maryland |
| 64 | Ida Horman | 48 | Wife | — | Maryland |
| 65 | Arthur Horman | 19 | Son | Chauffeur | Maryland |
| 66 | Melvin Horman | 11 | Son | — | Maryland |
| 67 | John B. Orasdel | 31 | Head | Fireman | Maryland |
| 68 | Mary Orasdel | 31 | Wife | — | Maryland |
| 69 | Elizabeth Orasdel | 6 | Daughter | — | Maryland |
| 70 | Dorothy Orasdel | 4 | Daughter | — | Maryland |
| 71 | Anna Orasdel | 2 | Daughter | — | Maryland |
| 72 | Byrd Nethker | 35 | Head | Machinist | Maryland |
| 73 | Virginia Nethker | 35 | Wife | — | Maryland |
| 74 | Martin Caraty | 50 | Head | Baggage Man | Ireland |
| 75 | Elizabeth Caraty | 46 | Wife | — | England |
| 76 | Eugene Smith | 52 | Head | Clerk | Germany |
| 77 | Alice Smith | 45 | Wife | — | Pennsylvania |
| 78 | Eugene Smith | 8 | Son | — | Maryland |
| 79 | Carolina Creamer | 79 | Mother in Law | — | Pennsylvania |
| 80 | Morris Creamer | 33 | Brother in Law | Clerk | Maryland |
| 81 | Charles H. Bentzel | 49 | Head | Bookkeeper | Pennsylvania |
| 82 | Mary W. Bentzel | 40 | Wife | — | Maryland |
| 83 | Robert E. Burton | 24 | Brother in Law | Machinist | Maryland |
| 84 | John G. Wisner | 42 | Head | Carpenter | Maryland |
| 85 | Catherine Wisner | 39 | Wife | — | Maryland |
| 86 | Florence Wisner | 17 | Daughter | — | Maryland |
| 87 | Frederick Wisner | 7 | Son | — | Maryland |
| 88 | Josephine Lerian | 42 | Head | — | Germany |
| 89 | Henry J. Lerian | 20 | Son | Pipefitter | Maryland |
| 90 | Walter Lerian | 17 | Son | File Clerk | Maryland |
| 91 | Bilmer L. Lerian | 12 | Son | — | Maryland |
| 92 | John J. Martin | 29 | Head | Tailor | Maryland |
| 93 | Stella Martin | 23 | Wife | — | Maryland |
| 94 | Bertha Martin THIS PERSON | 3 | Daughter | — | Maryland |
| 95 | Lawrence Hen | 24 | Head | Welder | Maryland |
| 96 | Jennie Hen | 21 | Wife | — | Maryland |
| 97 | Samuel Horner | 47 | Head | Foreman | Maryland |
| 98 | Clara E. Horner | 35 | Wife | — | Maryland |
| 99 | Charles Stumpf | 38 | Head | Secretary | Germany |
| 100 | Anne P. Stumpf | 39 | Wife | — | Maryland |
Pedigree Summary
Bertha
Gen 1 · 4 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)