MP
Mary Peck — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Milwaukee-County, Wisconsin
Our Model Tree links this Mary Peck across the 1930 and 1940 US Censuses in Milwaukee-County, Wisconsin (XGBoost, ~Confirmed) — first a spouse (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Female
Spouse
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Milwaukee-County, Wisconsin |
| Surname | Peck |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Wauwatosa |
| 1935 Residence (County) | Milwaukee |
| Additional Details | |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Wauwatosa |
| Est. Birth Year | ~1911 |
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 Peck | Spouse | — | 29 | ~1911 |
| Richard Peck | Son | — | 3 | ~1937 |
| Judith Peck | Daughter | — | ~1940 | |
| Robert Peck | Son | — | 2 | ~1938 |
| Earl Peck | Head | — | 30 | ~1910 |
Census Appearances
1930
Milwaukee, Wisconsin
Other, age 19
Milwaukee, Wisconsin · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pecka |
| Given Name | Mary |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Poland |
| Mother's Birthplace | Wisconsin |
| Occupation | Enameler |
| Industry | Tinware Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Milwaukee-County, Wisconsin
Spouse, age 29
Milwaukee-County, Wisconsin · implied b. ~1911 — 5 household members
| Surname | Peck |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Wauwatosa |
| 1935 Residence (County) | Milwaukee |
| Class of Worker | NP |
| Income (1939) | 0 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| 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 Peck across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Peck
Spouse · 1940 · age 29 · b. ~1911 · Wisconsin
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Milwaukee-County, Wisconsin
Open full size
1940 US Federal Census — Milwaukee-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04502-00671)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Estelle H. Arros | 48 | Wife | Housework | Illinois |
| 42 | John Arros | 16 | Son | — | Wisconsin |
| 43 | Harry L. Seip | 59 | Head | Vice President | Wisconsin |
| 44 | Elizabeth Seip | 54 | Wife | Housework | Wisconsin |
| 45 | John Nelson Seip | 26 | Son | Mortgage Salesman | Wisconsin |
| 46 | Margaret J. Seip | 23 | Daughter | Personal Director | Wisconsin |
| 47 | Harry James Seip | 20 | Son | — | Wisconsin |
| 48 | Fred G. Draper | 45 | Head | Insurance Salesman | Illinois |
| 49 | Louisa L. Draper | 51 | Wife | Housework | Illinois |
| 50 | Fred Eldredge Draper | 18 | Son | Photographer | Wisconsin |
| 51 | # End 17Th Ave Draper | None | start 18th Ave | — | — |
| 52 | Stephen J. Mcmahon | 57 | Head | Attorney | Wisconsin |
| 53 | Alice Mcmahon | 53 | Wife | — | Wisconsin |
| 54 | Stephen Jr. Mcmahon | 23 | Son | — | Wisconsin |
| 55 | Eugene Mcmahon | 18 | Son | — | Wisconsin |
| 56 | Harry Langsdorf | 38 | Head | Janitor | Wisconsin |
| 57 | Marie Langsdorf | 35 | Wife | Housework | Germany |
| 58 | Russell Langsdorf | 13 | Son | — | Wisconsin |
| 59 | Paul Pinoker | 31 | Head | Grocery Clerk | Wisconsin |
| 60 | Bertha Pinoker | 21 | Wife | — | Wisconsin |
| 61 | Rita Pinoker | 10 | Daughter | — | Wisconsin |
| 62 | Toby Jean Pinoker | 1 | Daughter | — | Wisconsin |
| 63 | Richard D. Henderson | 41 | Head | Roofing Salesman | Arkansas |
| 64 | Gladys E. Henderson | 37 | Wife | — | Wisconsin |
| 65 | Earl M. Peck | 30 | Head | Janitor | Wisconsin |
| 66 | Mary Peck THIS PERSON | 29 | Wife | — | Wisconsin |
| 67 | Richard E. Peck | 3 | Son | — | Wisconsin |
| 68 | Robert L. Peck | 2 | Son | — | Wisconsin |
| 69 | Judith M. Peck | 0 | Daughter | — | Wisconsin |
| 70 | Hertha Landmann | 61 | Head | — | Wisconsin |
| 71 | Eleanore Landmann | 31 | Daughter | Teacher | North Dakota |
| 72 | John Landmann | 28 | Son | Time Keeper | Wisconsin |
| 73 | Mabel Landmann | 30 | Daughter-in-law | Nurse | Wisconsin |
| 74 | Mr H Cantwell | 61 | Head | Food Clerk | Wisconsin |
| 75 | Mary M Cantwell | 56 | Wife | Charwoman | Wisconsin |
| 76 | Paul Cantwell | 21 | Son | Grocery Clerk | Wisconsin |
| 77 | John Cantwell | 18 | Son | — | Wisconsin |
| 78 | Mary Cantwell | 17 | Daughter | — | Wisconsin |
| 79 | Margaret Cantwell | 17 | Daughter | — | Wisconsin |
| 80 | Edward M Johnson | 34 | Head | Chief Clerk | Michigan |
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)