JF
John Flynn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Flynn across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents William & Wm — first a son (b.~1909), then head of a 7-person household.
Age 31
b. ~1909
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Flynn |
| Given Name | John N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Office clerk |
| Industry | Municipal Court |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Office Clerk |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1909 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Barnes | Daughter | — | 35 | ~1905 |
| William Flynn | Head | — | 70 | ~1870 |
| Phillip Barnes | Other | — | 5 | ~1935 |
| Bernard Barnes | Other | — | 35 | ~1905 |
| John Flynn | Son | — | 31 | ~1909 |
| William Flynn | Son | — | 36 | ~1904 |
| Matilda Flynn | Spouse | — | 68 | ~1872 |
Census Appearances
1920
Baltimore, Maryland
Son, age 10
Baltimore, Maryland · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 21
Baltimore, Maryland · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John X. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Runner |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 31
Baltimore-City-County, Maryland · implied b. ~1909 — 7 household members
| Surname | Flynn |
| Given Name | John N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Office clerk |
| Industry | Municipal Court |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 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 Flynn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Flynn (~0.92 confidence) and father Wm Flynn (~0.92 confidence) and mother Matilda Flynn (~0.92 confidence) and mother Matilda Flynn (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Flynn
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Wm Flynn
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Matilda Flynn
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Matilda Flynn
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Flynn
Son · 1940 · age 31 · b. ~1909 · Maryland
★ You are viewing this record
Sibling
Alice Barnes
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Flynn
Sibling · 1940 · age 36
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01520-00484)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emma Mullikin | 60 | Sister | Hair Dresser | Maryland |
| 2 | Marietta Mullikin | 47 | Sister | Office Clerk | Maryland |
| 3 | Barbara Mccay | 56 | Head | Saleswoman | Maryland |
| 4 | William Bertling | 32 | Son | Inquisitor | Maryland |
| 5 | Edith Bertling | 32 | Daughter in law | — | Maryland |
| 6 | Ellis Schaefer | 53 | Boarder | — | Maryland |
| 7 | Inea Berghoff | 60 | Head | Secretary | Maryland |
| 8 | Gertrude Berghoff | 40 | Sister | — | Maryland |
| 9 | Dorothy Bannon | 28 | Niece | Office Clerk | Maryland |
| 10 | James Medcalf | 55 | Head | — | Maryland |
| 11 | George Boane | 19 | Head | — | Maryland |
| 12 | Carrie Boane | 45 | Wife | — | Maryland |
| 13 | Hiram Claire | 62 | Head | — | Maryland |
| 14 | Alice Claire | 58 | Wife | — | Virginia |
| 15 | Leo J. Kelly | 61 | Head | — | Maryland |
| 16 | Mary Kelly | 58 | Wife | — | Washington DC |
| 17 | Ignatius Kelly | 34 | Son | Upholsterer | Maryland |
| 18 | Sam Serio | 44 | Head | Barber | Italy |
| 19 | Josephine Serio | 35 | Wife | — | Maryland |
| 20 | Marie Serio | 19 | Daughter | — | Maryland |
| 21 | Charles Serio | 14 | Son | — | Maryland |
| 22 | Sam Jr. Serio | 13 | Son | — | Maryland |
| 23 | Constance Serio | 12 | Daughter | — | Maryland |
| 24 | Joseph Serio | 7 | Son | — | Maryland |
| 25 | Amelia Serio | 4 | Daughter | — | Maryland |
| 26 | Vincent Serio | 2 | Son | — | Maryland |
| 27 | Harry Smith | 31 | Head | Checker-Stock | Maryland |
| 28 | Margaret Smith | 28 | Wife | — | Maryland |
| 29 | William O. Flynn | 70 | Head | — | Maryland |
| 30 | Matilda Flynn | 68 | Wife | — | Maryland |
| 31 | William Flynn | 36 | Son | Office Clerk | Maryland |
| 32 | John N. Flynn THIS PERSON | 31 | Son | Office Clerk | Maryland |
| 33 | Bernard Barnes | 35 | Son in law | Salesman | Maryland |
| 34 | Alice M. Barnes | 35 | Daughter | — | Maryland |
| 35 | Phillip Barnes | 5 | Grandson | — | Maryland |
| 36 | Nannie E. Lidie | 67 | Head | — | Maryland |
| 37 | Edward P. Healy | 43 | Son in law | Stationary Engineer | Pennsylvania |
| 38 | Mildred Healy | 41 | Daughter | — | Maryland |
| 39 | John Healy | 15 | Grandson | — | Maryland |
Related Census Records
Pedigree Summary
John + 2 siblings
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)