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William Lamb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this William Lamb across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 10-person household.
Age 14
b. ~1926
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Lamb |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1926 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Peter Lamb | Head | — | 49 | ~1891 |
| Margaret Lamb | Daughter | — | 18 | ~1922 |
| George Lamb | Son | — | 16 | ~1924 |
| Edward Lamb | Son | — | 21 | ~1919 |
| William Lamb | Son | — | 14 | ~1926 |
| Theresa Lamb | Daughter | — | 9 | ~1931 |
| Marie Lamb | Daughter | — | 11 | ~1929 |
| Margaret Lamb | Spouse | — | 42 | ~1898 |
| Helen Lamb | Daughter | — | 19 | ~1921 |
| Thomas Lamb | Son | — | 20 | ~1920 |
Census Appearances
1930
Burlington, New …
Son, age 4
Burlington, New Jersey · implied b. ~1926 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | William F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Switzerland |
| Can Read/Write | No |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 14
Philadelphia-County, Pennsylvania · implied b. ~1926 — 10 household members
| Surname | Lamb |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Highest Grade | Hs 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 Lamb across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Lamb
Son · 1940 · age 14 · b. ~1926 · Pennsylvania
★ You are viewing this record
Sibling
Helen Lamb
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Lamb
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lamb
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Lamb
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Lamb
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Lamb
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Lamb
Sibling · 1940 · age 21
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03716-00524)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emma Stewart | 26 | Daughter | Packer | Pennsylvania |
| 42 | James Stewart | 21 | Son | Painter | Pennsylvania |
| 43 | George Schwinn | 32 | Son-in-law | Inspector | Pennsylvania |
| 44 | Elizabeth Schwinn | 28 | Daughter | Clerical | Pennsylvania |
| 45 | James Mcfarland | 87 | Father | — | Pennsylvania |
| 46 | Peter Lamb | 49 | Head | Laborer | Pennsylvania |
| 47 | Margaret Lamb | 42 | Wife | — | Pennsylvania |
| 48 | Edward Lamb | 21 | Son | New Worker (Just Assigned) | Pennsylvania |
| 49 | Thomas Lamb | 20 | Son | New Worker | Pennsylvania |
| 50 | Helen Lamb | 19 | Daughter | Packer | Pennsylvania |
| 51 | Margaret Lamb | 18 | Daughter | New Worker | Pennsylvania |
| 52 | George Lamb | 16 | Son | — | Pennsylvania |
| 53 | William Lamb THIS PERSON | 14 | Son | — | Pennsylvania |
| 54 | Marie Lamb | 11 | Daughter | — | Pennsylvania |
| 55 | Theresa Lamb | 9 | Daughter | — | Pennsylvania |
| 56 | James P. Hyland | 63 | Head | Truck Driver | Pennsylvania |
| 57 | Lawrence Hyland | 18 | Son | — | Pennsylvania |
| 58 | Frank Kelly | 28 | Son-in-law | Repairman | Pennsylvania |
| 59 | Catherine Kelly | 25 | Daughter | — | Pennsylvania |
| 60 | Kathleen Kelly | 1 | Granddaughter | — | Pennsylvania |
| 61 | Leonard Armstrong | 45 | Head | Stereotype Operator | Pennsylvania |
| 62 | Mary Armstrong | 43 | Wife | — | Pennsylvania |
| 63 | Anna Armstrong | 20 | Daughter | Ward Maid | Pennsylvania |
| 64 | Edna Armstrong | 17 | Daughter | — | Pennsylvania |
| 65 | Dorothy Armstrong | 15 | Daughter | — | Pennsylvania |
| 66 | Leonard Armstrong | 13 | Son | — | Pennsylvania |
| 67 | Theresa Armstrong | 12 | Daughter | — | Pennsylvania |
| 68 | Frank Armstrong | 9 | Son | — | Pennsylvania |
| 69 | Regina Armstrong | 7 | Daughter | — | Pennsylvania |
| 70 | Eleanor Armstrong | 5 | Daughter | — | Pennsylvania |
| 71 | Joanne Armstrong | 1 | Daughter | — | Pennsylvania |
| 72 | Anna Payne | 43 | Head | Charwoman | Pennsylvania |
| 73 | George Payne | 20 | Son | Office Work | Pennsylvania |
| 74 | John Payne | 15 | Son | — | Pennsylvania |
| 75 | Jularita Payne | 11 | Daughter | — | Pennsylvania |
| 76 | Dolores Payne | 5 | Daughter | — | Pennsylvania |
| 77 | Annie Curry | 49 | Head | Laundress | Pennsylvania |
| 78 | Anna Curry | 31 | Daughter | Clerk | Pennsylvania |
| 79 | Eleanor Curry | 27 | Daughter | Secretary | Pennsylvania |
| 80 | Joseph Curry | 25 | Son | Helper | Pennsylvania |
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)