MJ
Mary Jacobs — 1930 US Census Record
Model Tree available1930 United States Federal Census · Bayfield, Wisconsin
Our Model Tree links this Mary Jacobs across the 1910, 1920 and 1930 US Censuses in Bayfield, Wisconsin (XGBoost, ~Confirmed), with identified parents John & Margretta — first a daughter (b.~1886), then head of a 4-person household.
Age 44
b. ~1886
Female
Daughter
Born: Wisconsin
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Bayfield, Wisconsin |
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Additional Details | |
| Occupation | Cashier |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Cashier |
| Township / Ward | Washburn City |
| Est. Birth Year | ~1886 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jacobs | Daughter | — | 44 | ~1886 |
| John Jacobs | Head | — | 69 | ~1861 |
| Edward Jacobs | Son | — | 38 | ~1892 |
| Margaret Jacobs | Spouse | — | 67 | ~1863 |
Census Appearances
1910
Bayfield, Wisconsin
Daughter, age 24
Bayfield, Wisconsin · implied b. ~1886 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Occupation | Clerk |
| Industry | in Bank |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Bayfield, Wisconsin
Daughter, age 34
Bayfield, Wisconsin · implied b. ~1886 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacobs |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Bayfield, Wisconsin
Daughter, age 44
Bayfield, Wisconsin · implied b. ~1886 — 4 household members
| Surname | Jacobs |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Wisconsin |
| Occupation | Cashier |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Jacobs across 3 US Census years (1910, 1920 and 1930) in Bayfield, Wisconsin, using XGBoost record linkage. Identified parents: father John Jacobs (~0.92 confidence) and mother Margretta Jacobs (~0.92 confidence) and mother Margaret Jacobs (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Jacobs
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Margretta Jacobs
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Margaret Jacobs
b. ~1863
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Jacobs
Daughter · 1930 · age 44 · b. ~1886 · Wisconsin
★ You are viewing this record
Sibling
Edward Jacobs
Sibling · 1930 · age 38
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
1930 US Federal Census — Bayfield, Wisconsin
Open full size
1930 US Federal Census — Bayfield, Wisconsin
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2560unit:0480)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Effie Palm | 46 | Wife | — | Michigan |
| 52 | Johanna Palm | 75 | Mother | — | Sweden |
| 53 | Robert Fluck | 44 | Head | Lumber | Wisconsin |
| 54 | Martha Fluck | 68 | Mother | — | Wisconsin |
| 55 | Robert Jr. Fluck | 14 | Son | — | Wisconsin |
| 56 | George Fluck | 13 | Son | — | Wisconsin |
| 57 | Howard Fluck | 11 | Son | — | Wisconsin |
| 58 | John A. Jacobs | 69 | Head | Retired | Ohio |
| 59 | Margaret Jacobs | 67 | Wife | — | Wisconsin |
| 60 | Mary Jacobs THIS PERSON | 44 | Daughter | Cashier | Wisconsin |
| 61 | Edward Jacobs | 38 | Son | Asst. Master | Wisconsin |
| 62 | Matilda Langer | 33 | Head | — | Minnesota |
| 63 | Chester Langer | 14 | Son | — | Minnesota |
| 64 | Mary Langer | 12 | Daughter | — | Minnesota |
| 65 | Robert Langer | 3 | Son | — | Minnesota |
| 66 | Iver Finstad | 48 | Head | Electrician | Wisconsin |
| 67 | Lillian Finstad | 42 | Wife | — | Illinois |
| 68 | Ethel Finstad | 17 | Daughter | — | Wisconsin |
| 69 | John Finstad | 14 | Son | — | Wisconsin |
| 70 | Alex Ungrodt | 67 | Head | Merchant | South Africa |
| 71 | Helene Ungrodt | 60 | Wife | — | Missouri |
| 72 | Hugo Ungrodt | 25 | Son | — | Wisconsin |
| 73 | Herbert Ungrodt | 23 | Son | — | Wisconsin |
| 74 | Irene Ungrodt | 21 | Daughter | — | Wisconsin |
| 75 | Stanley Stefinski | 33 | Head | Mechanic | Wisconsin |
| 76 | Lillian Stefinski | 27 | Wife | — | Wisconsin |
| 77 | Dorothy Stefinski | 5 | Daughter | — | Wisconsin |
| 78 | Gladys Stefinski | 4 | Daughter | — | Wisconsin |
| 79 | Robert Stefinski | 1 | Son | — | Wisconsin |
| 80 | Anna Bush | 43 | Head | — | Wisconsin |
| 81 | Lillian Bush | 16 | Daughter | — | Wisconsin |
| 82 | Harry Bush | 12 | Son | — | Wisconsin |
| 83 | Robert Bush | 10 | Son | — | Wisconsin |
| 84 | Donald Bush | 7 | Son | — | Wisconsin |
| 85 | Margaret Bush | 5 | Daughter | — | Wisconsin |
| 86 | Hjalmar Axelberg | 69 | Head | Judge | Norway |
| 87 | Mary Axelberg | 65 | Wife | — | Norway |
| 88 | John Smith | 68 | Head | Superintendent | Wisconsin |
| 89 | Jane Smith | 64 | Wife | — | Wisconsin |
| 90 | Warren Smith | 21 | Son | Laborer | Wisconsin |
| 91 | Grace Brining | 38 | Daughter | Clerk | Wisconsin |
| 92 | Marion Brining | 13 | Granddaughter | — | Wisconsin |
| 93 | Daniel Brining | 11 | Grandson | — | Wisconsin |
| 94 | Jane Brining | 9 | Granddaughter | — | Wisconsin |
| 95 | Grace Brining | 7 | Granddaughter | — | Wisconsin |
| 96 | Leroy Bracken | 32 | Head | Teacher | Maine |
| 97 | Ruth Bracken | 28 | Wife | — | Wisconsin |
| 98 | Grace Bracken | 8 | Daughter | — | Wisconsin |
| 99 | Anna Moody | 18 | Sister | — | Maine |
| 100 | Kate Bracken | 73 | Mother | — | Maine |
Related Census Records
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)