WF
William Flynn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Flynn across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Harry & Elizabeth — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Flynn |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | New worker |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | New Worker |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1917 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Flynn | Daughter | — | 15 | ~1925 |
| Beatrice Flynn | Daughter | — | 19 | ~1921 |
| Harry Flynn | Head | — | 56 | ~1884 |
| William Flynn | Son | — | 23 | ~1917 |
| Elizabeth Flynn | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age
Allegheny, Pennsylvania · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 11
Allegheny, Pennsylvania · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 23
Allegheny-County, Pennsylvania · implied b. ~1917 — 5 household members
| Surname | Flynn |
| Given Name | William L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | New worker |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 William Flynn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Flynn (~0.92 confidence) and mother Elizabeth Flynn (~0.92 confidence) and father John Flynn (~0.92 confidence) and father John Flynn (~0.92 confidence) and mother Lucy Flynn (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Flynn
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Flynn
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
John Flynn
b. ~1895
Source father
● Household
· direct · ~0.92
Father
John Flynn
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Lucy Flynn
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Flynn
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Evelyn Flynn
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Flynn
Sibling · 1940 · age 19
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03664-00379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Josephine Mecco | 50 | Head | — | Italy |
| 2 | Lena Mecco | 18 | Daughter | — | Pennsylvania |
| 3 | Josephine Mecco | 14 | Daughter | — | Pennsylvania |
| 4 | Harry Flynn | 56 | Head | Plumber | England |
| 5 | Elizabeth Flynn | 52 | Wife | — | England |
| 6 | William L. Flynn THIS PERSON | 23 | Son | New Worker | Pennsylvania |
| 7 | Beatrice Flynn | 19 | Daughter | New Worker | Pennsylvania |
| 8 | Evelyn Flynn | 15 | Daughter | — | Pennsylvania |
| 9 | John Jr. Payne | 34 | Head | Laborer | Irish Free State |
| 10 | Mary E. Payne | 32 | Wife | — | Pennsylvania |
| 11 | John P. Payne | 2 | Son | — | Pennsylvania |
| 12 | Raymond A. Glaser | 43 | Head | Proprietor | Pennsylvania |
| 13 | Joan M. Glaser | 41 | Wife | — | Pennsylvania |
| 14 | Raymond Jr. Glaser | 20 | Son | Florist Helper | Pennsylvania |
| 15 | Virginia A. Glaser | 15 | Daughter | — | Pennsylvania |
| 16 | Howell P. Ross | 42 | Brother-in-law | Insurance Collector | Pennsylvania |
| 17 | Elenor P. Ross | 37 | Sister-in-law | — | Pennsylvania |
| 18 | William Jones | 49 | Head | Boiler Maker | Ohio |
| 19 | Rose G. Jones | 47 | Wife | — | Ohio |
| 20 | William G. Jones | 26 | Son | Butler Fireman | Pennsylvania |
| 21 | Ellen Mary M. Jones | 24 | Daughter | Maid | Pennsylvania |
| 22 | Agnes R. Jones | 19 | Daughter | — | Pennsylvania |
| 23 | Frederick P. Jones | 16 | Son | — | Pennsylvania |
| 24 | Joseph Jones | 10 | Son | — | Pennsylvania |
| 25 | Harry A. Snyder | 48 | Head | Teacher | Pennsylvania |
| 26 | Florence B. Snyder | 40 | Wife | — | Pennsylvania |
| 27 | Harry A. Jr. Snyder | 15 | Son | — | Pennsylvania |
| 28 | Donald Clayton Snyder | 9 | Son | — | Pennsylvania |
| 29 | — | None | — | — | — |
| 30 | Frank M. Heckman | 52 | Head | Stationary Engineer | Pennsylvania |
| 31 | Edna S. Heckman | 50 | Wife | — | Pennsylvania |
| 32 | Harry J. Heckman | 23 | Son | Heater Helper | Pennsylvania |
| 33 | Arthur W. Heckman | 20 | Son | Waiter | Pennsylvania |
| 34 | Lillian L. Heckman | 15 | Daughter | — | Pennsylvania |
| 35 | John Graybos | 45 | Head | Structural Iron Worker | Poland |
| 36 | Helen Graybos | 41 | Wife | Cook | Poland |
| 37 | Sophia Anna Graybos | 20 | Daughter | Waitress | Pennsylvania |
| 38 | Edward S. Graybos | 15 | Son | — | Pennsylvania |
| 39 | Joseph Jr. Molnar | 34 | Head | Railway Mail Clerk | Pennsylvania |
| 40 | Agnes M. Molnar | 31 | Wife | — | Pennsylvania |
Pedigree Summary
William + 2 siblings
Gen 1 · 5 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)