JL
John Lamb — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this John Lamb across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Lamb |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Salesman |
| Industry | Patent Free Medicine |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 278 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Salesman |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1908 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Lamb | Son | — | 5 | ~1935 |
| John Lamb | Head | — | 32 | ~1908 |
| Helen Lamb | Spouse | — | 27 | ~1913 |
| Judith Lamb | Daughter | — | 2 | ~1938 |
Census Appearances
1920
Wayne, Michigan
Son, age 12
Wayne, Michigan · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | John A. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Canada |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Son, age 22
Wayne, Michigan · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | John A Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Head, age 32
Wayne-County, Michigan · implied b. ~1908 — 4 household members
| Surname | Lamb |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | Salesman |
| Industry | Patent Free Medicine |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 278 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 John Lamb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Lamb (~0.92 confidence) and father John Lamb (~0.92 confidence) and mother Isabel Lamb (~0.92 confidence) and mother Isabel Lamb (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Lamb
b. ~1869
Source father
● Household
· direct · ~0.92
Father
John Lamb
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Isabel Lamb
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Isabel Lamb
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Lamb
Head · 1940 · age 32 · b. ~1908 · Michigan
★ 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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01891-00163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George A Morris | 37 | Head | Salesman | Pennsylvania |
| 42 | Annie Morris | 36 | Wife | Saleslady | England |
| 43 | Gloria Morris | 11 | Daughter | — | Michigan |
| 44 | Linda Morris | 5 | Daughter | — | Michigan |
| 45 | William Carson | 40 | Head | Millwright | New York |
| 46 | Eunice Carson | 48 | Wife | — | England |
| 47 | Philip Phillips | 34 | Head | Salesman | Michigan |
| 48 | Geneva Phillips | 33 | Wife | — | Kentucky |
| 49 | Joyce Phillips | 7 | Daughter | — | Michigan |
| 50 | Ann Phillips | 5 | Daughter | — | Michigan |
| 51 | Robert Phillips | 2 | Son | — | Michigan |
| 52 | Clarence Fry | 66 | Father-in-law | — | Kentucky |
| 53 | Wilfred P Davidson | 42 | Head | Motion Picture Projectionist | England |
| 54 | Paula Davidson | 39 | Wife | — | Michigan |
| 55 | Arla Davidson | 16 | Daughter | — | Michigan |
| 56 | Patricia Davidson | 15 | Daughter | — | Michigan |
| 57 | John Lamb THIS PERSON | 32 | Head | Salesman | Michigan |
| 58 | Helen Lamb | 27 | Wife | — | Michigan |
| 59 | John Lamb | 5 | Son | — | Michigan |
| 60 | Judith Lamb | 2 | Daughter | — | Michigan |
| 61 | George Mark | 31 | Head | Power House Operator | Pennsylvania |
| 62 | Caroline Mark | 25 | Wife | — | Pennsylvania |
| 63 | Karen Mark | 3 | Daughter | — | Michigan |
| 64 | Mary Mark | 46 | Mother | — | Pennsylvania |
| 65 | Alfred Bonnell | 45 | Lodger | Laborer | Malta |
| 66 | Alice Bonnell | 48 | Lodger | — | England |
| 67 | Sylvester Shields | 42 | Head | Policeman | Michigan |
| 68 | Mary Shields | 41 | Wife | — | Michigan |
| 69 | Delores Shields | 16 | Daughter | — | Michigan |
| 70 | Lambert Shields | 13 | Son | — | Michigan |
| 71 | Jean Shields | 8 | Daughter | — | Michigan |
| 72 | John Keppala | 32 | Head | Pipe Welding | Michigan |
| 73 | Edna Keppala | 27 | Wife | — | Michigan |
| 74 | Mary J Keppala | 1 | Daughter | — | Michigan |
| 75 | Harold Grubbs | 34 | Head | Druggist | Michigan |
| 76 | Catherine Grubbs | 32 | Wife | — | Michigan |
| 77 | Joan Grubbs | 1 | Daughter | — | Michigan |
| 78 | Kenneth Ram | 28 | Head | Salesman | Michigan |
| 79 | Mary H Ram | 31 | Wife | — | Ohio |
| 80 | Karen Ram | 2 | Daughter | — | Michigan |
Pedigree Summary
John
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 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)