MZ
Mary Zimmerman — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Mary Zimmerman across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1855), then head of a 4-person household.
Age 65
b. ~1855
Female
Head
Born: Maryland
Widowed
1920 Census Record Details
| Census Year | 1920 |
| Location | Baltimore, Maryland |
| Surname | Zimmerman |
| Given Name | Mary F |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Est. Birth Year | ~1855 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Johanna Cranford | Daughter | — | 44 | ~1876 |
| Mary Zimmerman | Head | — | 65 | ~1855 |
| Wilmer Cranford | Other | — | 18 | ~1902 |
| Johanna Cranford | Other | — | 19 | ~1901 |
Census Appearances
1920
Baltimore, Maryland
Head, age 65
Baltimore, Maryland · implied b. ~1855 — 4 household members
| Surname | Zimmerman |
| Given Name | Mary F |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 74
Baltimore, Maryland · implied b. ~1856 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmermann |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 84
Baltimore-City-County, Maryland · implied b. ~1856 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Zimmerman |
| Given Name | Mary E. |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 84 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore city |
| 1935 Residence (County) | Baltimore city |
| 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 Mary Zimmerman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Zimmerman
Head · 1920 · age 65 · b. ~1855 · 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:0489)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Irvin E Dine | 3 | Son | — | Maryland |
| 52 | Adam C Lang | 42 | Head | Butcher | Maryland |
| 53 | Sophia E Lang | 38 | Wife | — | Maryland |
| 54 | George E Lang | 14 | Son | — | Maryland |
| 55 | Dorothy M Lang | 13 | Daughter | — | Maryland |
| 56 | Gertrude M Lang | 11 | Daughter | — | Maryland |
| 57 | Ruth E Lang | 7 | Daughter | — | Maryland |
| 58 | Christian Gunser | 64 | Head | Proprietor | Germany |
| 59 | Anna M Gunser | 60 | Wife | — | Maryland |
| 60 | Albert E Gunser | 30 | Son | Butcher | Maryland |
| 61 | John M Gunser | 27 | Son | Butcher | Maryland |
| 62 | Maryanna Gunser | 26 | Daughter | — | Maryland |
| 63 | Nettie String | 31 | Head | Candy Maker | Maryland |
| 64 | Louis E String | 9 | Son | — | Maryland |
| 65 | Mildred String | 7 | Daughter | — | Maryland |
| 66 | Gladys String | 3 | Daughter | — | Maryland |
| 67 | William Krinke | 80 | Boarder | — | Maryland |
| 68 | Carl Long | 36 | Boarder | Stevedore | Germany |
| 69 | Elizabeth Tebruch | 56 | Head | — | Maryland |
| 70 | William S Tebruch | 32 | Son | Butcher | Maryland |
| 71 | Caroline Tebruch | 19 | Daughter | Packer | Maryland |
| 72 | Catherine Tebruch | 17 | Daughter | Packer | Maryland |
| 73 | Gladys Tebruch | 16 | Daughter | — | Maryland |
| 74 | Ida V Tebruch | 11 | Daughter | — | Maryland |
| 75 | Joseph M Barton | 47 | Head | Trucker | Maryland |
| 76 | Annie Barton | 46 | Wife | — | New York |
| 77 | Dorothy A Barton | 15 | Daughter | — | Maryland |
| 78 | William S Barton | 17 | Son | Driver | Maryland |
| 79 | Sarah E Barton | 82 | Aunt | — | Maryland |
| 80 | George Smith | 71 | Head | Bristle Worker | Maryland |
| 81 | Annie Smith | 66 | Wife | — | Germany |
| 82 | August Rudolph | 47 | Head | Laborer | Maryland |
| 83 | Annie M Rudolph | 33 | Wife | — | Maryland |
| 84 | Charles Hirschman | 34 | Head | Carpenter | Maryland |
| 85 | Edith May Hirschman | 27 | Wife | — | Maryland |
| 86 | Mildred Hirschman | 2 | Daughter | — | Maryland |
| 87 | Catherine Coller | 65 | Mother-in-law | — | Maryland |
| 88 | Leonard Rummel | 74 | Head | Butcher | Germany |
| 89 | George Rummel | 26 | Son | Clerk | Maryland |
| 90 | Mary F Zimmerman THIS PERSON | 65 | Head | — | Maryland |
| 91 | Johanna Cranford | 44 | Daughter | Forelady | Maryland |
| 92 | Johanna M Cranford | 19 | Granddaughter | — | Maryland |
| 93 | Wilmer Cranford | 18 | Grandson | Laborer | Maryland |
| 94 | George A Gimler | 30 | Head | Riveter | Maryland |
| 95 | Amelia A Gimler | 30 | Wife | — | Maryland |
| 96 | Roland J Gimler | 9 | Son | — | Maryland |
| 97 | Marie A Gimler | 7 | Daughter | — | Maryland |
| 98 | William F Smith | 22 | Boarder | Pipefitter | Maryland |
| 99 | Marie A Smith | 23 | Boarder | — | Maryland |
| 100 | Edward A Farber | 37 | Head | Chauffeur | Maryland |
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)