JQ
John Quinn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Quinn across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 3-person household.
Age 45
b. ~1895
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Quinn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | BALTIMORE CITY |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Laborer |
| Industry | Standard Oil Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1895 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Quinn | Head | — | 45 | ~1895 |
| John Quinn | Son | — | 18 | ~1922 |
| Anna Quinn | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Baltimore, Maryland
Head, age 29
Baltimore, Maryland · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Queen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Car Wheel works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 39
Baltimore, Maryland · implied b. ~1891 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 24 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Labor |
| Industry | Standard Oil |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000.00 |
| Radio Set | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 45
Baltimore-City-County, Maryland · implied b. ~1895 — 3 household members
| Surname | Quinn |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | BALTIMORE CITY |
| 1935 Residence (County) | Baltimore City |
| Occupation | Laborer |
| Industry | Standard Oil Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Quinn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Quinn
Head · 1940 · age 45 · b. ~1895 · Maryland
★ 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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01508-00802)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph Robeski | 65 | Head | — | Austria |
| 42 | Somers Albertoni | 54 | Head | — | New Jersey |
| 43 | Daisy Albertoni | 56 | Wife | — | Maryland |
| 44 | Robert Wilson | 28 | Head | Laborer | Maryland |
| 45 | Amanda Wilson | 36 | Wife | — | Pennsylvania |
| 46 | John Quinn THIS PERSON | 45 | Head | Laborer | Maryland |
| 47 | Anna Quinn | 52 | Wife | — | Maryland |
| 48 | John Jr Quinn | 18 | Son | New Worker | Maryland |
| 49 | James Poetzel | 33 | Head | Brewer | Maryland |
| 50 | Catherine Poetzel | 29 | Wife | — | Maryland |
| 51 | Kathleen Poetzel | 10 | Daughter | — | Maryland |
| 52 | Joseph Horner | 29 | Head | Laborer | Maryland |
| 53 | Rose Horner | 26 | Wife | Sorter | Maryland |
| 54 | William Underwood | 35 | Head | Laborer | New York |
| 55 | Alice Underwood | 31 | Wife | — | Maryland |
| 56 | Charlotte Underwood | 6 | Daughter | — | Maryland |
| 57 | Elizabeth Brungck | 72 | Head | — | Maryland |
| 58 | Joseph Knoch | 54 | Head | Sewer Department | Poland |
| 59 | Floyd Woolridge | 27 | Son-in-law | Porter | Indiana |
| 60 | Mary Woolridge | 29 | Daughter | — | Poland |
| 61 | Chester Woolridge | 5 | Grandson | — | Maryland |
| 62 | Anna Woolridge | 4 | Granddaughter | — | Maryland |
| 63 | Stevan Woolridge | 1 | Grandson | — | Indiana |
| 64 | Bernard Mooney | 23 | Head | Electric Welder | Maryland |
| 65 | Eva Mooney | 23 | Wife | — | Maryland |
| 66 | James Mach | 44 | Head | Police | Maryland |
| 67 | Elsie Mach | 37 | Wife | — | Maryland |
| 68 | Regina Mach | 16 | Daughter | — | Maryland |
| 69 | James Mach | 7 | Son | — | Maryland |
| 70 | John Wagner | 54 | Head | Laborer | Poland |
| 71 | Mary Wagner | 54 | Wife | — | Poland |
| 72 | Helen Wagner | 21 | Daughter | Laborer | Maryland |
| 73 | Frank Wagner | 20 | Son | Clerk | Maryland |
| 74 | Frances Wagner | 19 | Daughter | — | Maryland |
| 75 | John Wagner | 18 | Son | New Worker | Maryland |
| 76 | Agnes Wagner | 14 | Daughter | — | Maryland |
| 77 | Theresa Wagner | 11 | Daughter | — | Maryland |
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)