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Joseph Mayer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Grand-Forks-County, North Dakota
Our Model Tree links this Joseph Mayer across the 1930 and 1940 US Censuses in Grand-Forks-County, North Dakota (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Grand-Forks-County, North Dakota |
| Surname | Mayer |
| Given Name | Joseph A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Grand Forks |
| 1935 Residence (County) | Grand Forks |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Grand Forks |
| Est. Birth Year | ~1929 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Rose Mayer | Daughter | — | 6 | ~1934 |
| Charlotte Mohr | Other | — | 20 | ~1920 |
| Joseph Mayer | Head | — | 40 | ~1900 |
| Angela Mayer | Daughter | — | 1 | ~1939 |
| Philip Mayer | Son | — | 4 | ~1936 |
| Patricia Mayer | Daughter | — | 12 | ~1928 |
| Richard Mayer | Son | — | 9 | ~1931 |
| Joseph Mayer | Son | — | 11 | ~1929 |
| Mabel Mayer | Spouse | — | 40 | ~1900 |
| Marilyn Mayer | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Grand Forks, …
Son, age 1
Grand Forks, North Dakota · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mayer |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Grand-Forks-County, North …
Son, age 11
Grand-Forks-County, North Dakota · implied b. ~1929 — 10 household members
| Surname | Mayer |
| Given Name | Joseph A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Grand Forks |
| 1935 Residence (County) | Grand Forks |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Joseph Mayer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Mayer
Son · 1940 · age 11 · b. ~1929 · North Dakota
★ You are viewing this record
Sibling
Patricia Mayer
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilyn Mayer
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Angela Mayer
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Mayer
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mayer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Mayer
Sibling · 1940 · age 6
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
1940 US Federal Census — Grand-Forks-County, North Dakota
Open full size
1940 US Federal Census — Grand-Forks-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03002-00176)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Chris Haahr | 53 | Head | Truck Driver | Iowa |
| 42 | Ruth E Haahr | 49 | Wife | Seamstress | Minnesota |
| 43 | Louis J Haahr | 18 | Son | Stock Clerk | North Dakota |
| 44 | James E Haahr | 15 | Son | — | North Dakota |
| 45 | Karen Haahr | 77 | Mother | — | Denmark |
| 46 | M Schultz | 25 | Head | — | Minnesota |
| 47 | George M Olson | 50 | Head | Beauty Operator | Minnesota |
| 48 | Julia M Olson | 50 | Wife | Assistant Operator | Minnesota |
| 49 | George M Jr Olson | 19 | Son | — | North Dakota |
| 50 | Ardee M Olson | 7 | Son | Laborer | North Dakota |
| 51 | Thecla Tandem | 28 | Lodger | Teacher | Iowa |
| 52 | Esther Langehaug | 27 | Lodger | Teacher | North Dakota |
| 53 | Patsy Oleson | 28 | Lodger | Teacher | North Dakota |
| 54 | Lillian Weidenhoeft | 29 | Lodger | Nurse | Minnesota |
| 55 | Bertha Reynolds | 34 | Head | Teacher | Mississippi |
| 56 | Mildred Benson | 23 | Head | Stenographer | North Dakota |
| 57 | Myrta Wood | 25 | Head | Nurse | North Dakota |
| 58 | Ilovis Swenson | 22 | Partner | Bookkeeper | North Dakota |
| 59 | Natalie Strandberg | 21 | Head | Cashier | North Dakota |
| 60 | Adeline Theckwold | 21 | Partner | Stenographer | North Dakota |
| 61 | Sarah Allen | 71 | Head | — | Pennsylvania |
| 62 | James R Allen | 29 | Son | Salesman | North Dakota |
| 63 | Paul R Quane | 38 | Son-in-law | Florist | Pennsylvania |
| 64 | Mary E Quane | 40 | Daughter | — | North Dakota |
| 65 | Sarah M Quane | 5 | Daughter | — | North Dakota |
| 66 | Paul R Quane | 0 | Son | — | North Dakota |
| 67 | Joseph L Mayer | 40 | Head | Superintendent | Minnesota |
| 68 | Mabel R Mayer | 40 | Wife | — | Minnesota |
| 69 | Patricia B Mayer | 12 | Daughter | — | Minnesota |
| 70 | Joseph A Mayer THIS PERSON | 11 | Son | — | Minnesota |
| 71 | Richard E Mayer | 9 | Son | — | North Dakota |
| 72 | Marilyn J Mayer | 8 | Daughter | — | North Dakota |
| 73 | Rose A Mayer | 6 | Daughter | — | North Dakota |
| 74 | Philip A Mayer | 4 | Son | — | North Dakota |
| 75 | Angela C Mayer | 1 | Daughter | — | North Dakota |
| 76 | Charlotte Mohr | 20 | Maid | Maid | Minnesota |
| 77 | John T Erickson | 54 | Head | Carpenter | North Dakota |
| 78 | Amanda E Erickson | 40 | Wife | — | North Dakota |
| 79 | Emmett N Erickson | 19 | Son | Helper | Montana |
| 80 | Joseph O Erickson | 17 | Son | Helper | Idaho |
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)