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Margaret Lee — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Margaret Lee across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Michael — first a daughter (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Lee |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Darby |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Copy Holder |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 884 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Copy Holder |
| Township / Ward | Upper Darby |
| Est. Birth Year | ~1919 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Lee | Daughter | — | 6 | ~1934 |
| Margaret Lee | Daughter | — | 21 | ~1919 |
| Ruth Lee | Daughter | — | 23 | ~1917 |
| Michael Lee | Head | — | 49 | ~1891 |
| Joseph Lee | Son | — | 16 | ~1924 |
| Francis Lee | Son | — | 19 | ~1921 |
| Thomas Lee | Son | — | 26 | ~1914 |
| William Lee | Son | — | 12 | ~1928 |
| Elizabeth Lee | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Philadelphia, Pennsylvania
Daughter, age 1
Philadelphia, Pennsylvania · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Daughter, age 11
Philadelphia, Pennsylvania · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Daughter, age 21
Delaware-County, Pennsylvania · implied b. ~1919 — 9 household members
| Surname | Lee |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Upper Darby |
| 1935 Residence (County) | Delaware |
| Occupation | Copy Holder |
| Industry | Printing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 884 |
| Highest Grade | No 3 |
| 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 Margaret Lee across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Lee (~0.92 confidence) and father Michael Lee (~0.92 confidence) and father William Lee (~0.92 confidence) and mother Elizabeth Lee (~0.92 confidence) and mother Elizabeth Lee (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Lee
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Michael Lee
b. ~1891
Source father
● Household
· direct · ~0.92
Father
William Lee
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Lee
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Lee
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Lee
Daughter · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
Elizabeth Lee
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Lee
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lee
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lee
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Lee
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lee
Sibling · 1940 · age 23
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03497-00137)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fettes Mabel Freyer | 63 | Maid | Housework | Scotland |
| 2 | Michael Lee | 49 | Head | Supervisor | Pennsylvania |
| 3 | Elizabeth Lee | 47 | Wife | — | Pennsylvania |
| 4 | Thomas Lee | 26 | Son | — | Pennsylvania |
| 5 | Ruth Lee | 23 | Daughter | Manager | Pennsylvania |
| 6 | Margaret Lee THIS PERSON | 21 | Daughter | Copy Holder | Pennsylvania |
| 7 | Francis Lee | 19 | Son | Bindery | Pennsylvania |
| 8 | Joseph Lee | 16 | Son | — | Pennsylvania |
| 9 | William Lee | 12 | Son | — | Pennsylvania |
| 10 | Elizabeth Lee | 6 | Daughter | — | Pennsylvania |
| 11 | Thomas B Delbridge | 56 | Head | Chemist | New York |
| 12 | Belle Delbridge | 57 | Wife | — | New York |
| 13 | Joseph A Lee | 39 | Head | Supervisor | Pennsylvania |
| 14 | Margaret M Lee | 36 | Wife | — | Pennsylvania |
| 15 | Ellen Shillingford | 72 | Mother-in-law | — | Pennsylvania |
| 16 | Daisy Scott | 56 | Head | — | Maryland |
| 17 | Helen D Scott | 33 | Daughter | Manager | Maryland |
| 18 | George Lathbury | 34 | Roomer | Salesman | Pennsylvania |
| 19 | Albert S Blank | 45 | Head | Meat Inspector | Pennsylvania |
| 20 | Gladys Blank | 43 | Wife | — | New Jersey |
| 21 | Frank C Jamison | 58 | Head | Manager | New Jersey |
| 22 | Annie M Jamison | 63 | Wife | — | New Jersey |
| 23 | Marshall Cherrie | 33 | Boarder | Bus Driver | Iowa |
| 24 | Augusta M Cherrie | 31 | Boarder | — | Pennsylvania |
| 25 | Jean D Cherrie | 8 | Granddaughter | — | Pennsylvania |
| 26 | Arlene M Cherrie | 3 | Granddaughter | — | Pennsylvania |
| 27 | Dora L Ruoff | 58 | Head | — | Pennsylvania |
| 28 | Walter G Ruoff | 53 | Partner | — | Pennsylvania |
| 29 | Helen J Theobold | 56 | Head | — | Pennsylvania |
| 30 | Herbert J Theobold | 29 | Son | Broker | New Jersey |
| 31 | Frank Theobold | 25 | Son | Adjuster | New Jersey |
| 32 | Dorothy J Busch | 31 | Daughter | — | Pennsylvania |
| 33 | Helen J Busch | 6 | Granddaughter | — | Pennsylvania |
| 34 | Ethel Carter | 45 | Maid | Housework | New Jersey |
| 35 | Richard Machwirth | 42 | Head | Contractor | New Jersey |
| 36 | Esther L Machwirth | 37 | Wife | — | Pennsylvania |
| 37 | Dorothy E Machwirth | 12 | Daughter | — | Pennsylvania |
| 38 | Thelma L Machwirth | 9 | Daughter | — | Pennsylvania |
| 39 | Eugene W Bonham | 34 | Head | Electrical Engineer | Wyoming |
| 40 | Marjory C Bonham | 31 | Wife | — | Pennsylvania |
Pedigree Summary
Margaret + 6 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)