LM
Lawrence Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ingham-County, Michigan
Our Model Tree links this Lawrence Martin across the 1920, 1930 and 1940 US Censuses in Ingham-County, Michigan (XGBoost, ~Confirmed), with identified parents John & Johanna — first a head (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ingham-County, Michigan |
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Delhi Township |
| Additional Details | |
| Occupation | Machine repairman |
| Industry | Atlas Drop Forge |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 336 |
| Highest Grade | No 12 |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Machine Repairman |
| Township / Ward | Delhi Township |
| Est. Birth Year | ~1912 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lawrence | Age | Birth yr |
|---|---|---|---|---|
| Barbara Martin | Spouse | — | 24 | ~1916 |
| Gerald Martin | Son | — | ~1940 | |
| Lawrence Martin | Head | — | 28 | ~1912 |
Census Appearances
1920
Ingham, Michigan
Son, age 8
Ingham, Michigan · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lawrence E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Ingham, Michigan
Son, age 18
Ingham, Michigan · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Lawrence E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ingham-County, Michigan
Head, age 28
Ingham-County, Michigan · implied b. ~1912 — 3 household members
| Surname | Martin |
| Given Name | Lawrence |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Delhi Township |
| Occupation | Machine repairman |
| Industry | Atlas Drop Forge |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 336 |
| Highest Grade | No 12 |
| 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 Lawrence Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and mother Johanna Martin (~0.92 confidence) and mother Theresa Martin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Johanna Martin
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Theresa Martin
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lawrence Martin
Head · 1940 · age 28 · b. ~1912 · 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 — Ingham-County, Michigan
Open full size
1940 US Federal Census — Ingham-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01759-00169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucile Cox | 34 | Wife | — | Michigan |
| 42 | Thomas Cox | 2 | Son | — | Michigan |
| 43 | James Cox | 0 | Son | — | Michigan |
| 44 | William H. Bale | 61 | Head | Store Keeper | Ohio |
| 45 | Hattie Jane Bale | 55 | Wife | Helper In Store | Michigan |
| 46 | Hettie E. Bale | 36 | Daughter | — | Michigan |
| 47 | Paul M. Bale | 20 | Son | In School | Michigan |
| 48 | Wilson C. Aldrich | 24 | Head | Store Keeper | Michigan |
| 49 | Cleo Aldrich | 27 | Wife | Helper In Store | Ohio |
| 50 | Cleo Aldrich | 22 | Daughter | Private Nurse | Michigan |
| 51 | Fred A. Phelps | 57 | Head | — | Michigan |
| 52 | Edward Lyons | 36 | Head | Manager Consolidated Freight | Indiana |
| 53 | Martha D. Lyons | 32 | Wife | — | Michigan |
| 54 | Edward Lyons | 8 | Son | — | Michigan |
| 55 | William Lyons | 5 | Son | — | Michigan |
| 56 | Arthur France | 48 | Head | Printer | Michigan |
| 57 | Ruth France | 47 | Wife | — | Michigan |
| 58 | Vernon A. France | 19 | Daughter | In School | Michigan |
| 59 | David A. Wilcox | 30 | Head | Lecturer | Michigan |
| 60 | Florence Wilcox | 29 | Wife | — | Michigan |
| 61 | David Wilcox | 1 | Son | — | Michigan |
| 62 | Wagner | 49 | Head | Ingham County Health Dept | Michigan |
| 63 | Israel Wagner | 83 | Father | — | Ohio |
| 64 | Mildred Cardwell | 46 | Lodger | Public Health Nurse | Ohio |
| 65 | Alice Severance | 66 | Lodger | Housekeeper | Michigan |
| 66 | Mary Matula | 30 | Lodger | Public Health Nurse | Czechoslovakia |
| 67 | E. G. Blakely | 61 | Head | Federal Court | Michigan |
| 68 | Minnie Blakely | 60 | Wife | — | Michigan |
| 69 | Nellie Cline | 58 | Sister in law | — | Michigan |
| 70 | Lawrence Martin THIS PERSON | 28 | Head | Machine Repairman | Michigan |
| 71 | Barbara Martin | 24 | Wife | — | Michigan |
| 72 | Gerald Martin | 0 | Son | — | Michigan |
| 73 | Lewis Martin | 23 | Head | Riveter | Michigan |
| 74 | Glenda Martin | 21 | Wife | — | Illinois |
| 75 | Vicky Lee Martin | 0 | Daughter | — | Michigan |
| 76 | Harold Martin | 26 | Head | Cab Driver | Michigan |
| 77 | Maurice Martin | 32 | Brother | Assembly Line Worker | Michigan |
| 78 | W. M. Rifen | 54 | Head | Manager Farm | Michigan |
| 79 | Myra R. Rifen | 52 | Wife | — | Michigan |
| 80 | Robert J. Rifen | 21 | Son | In School | Michigan |
Pedigree Summary
Lawrence
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 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)