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William Nolan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Nolan across the 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 7-person household.
Age 28
b. ~1912
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Nolan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | School Teacher |
| Industry | School Dept |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Teacher |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1912 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Mary Nolan | Head | — | 67 | ~1873 |
| Joseph Nolan | Son | — | 35 | ~1905 |
| Helen Nolan | Daughter | — | 23 | ~1917 |
| Kathleen Nolan | Daughter | — | 32 | ~1908 |
| Mary Nolan | Daughter | — | 30 | ~1910 |
| William Nolan | Son | — | 28 | ~1912 |
| Edward Nolan | Son | — | 25 | ~1915 |
Census Appearances
1930
Essex, Massachusetts
Son, age 18
Essex, Massachusetts · implied b. ~1912 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nolan |
| Given Name | William J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 28
Essex-County, Massachusetts · implied b. ~1912 — 7 household members
| Surname | Nolan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Occupation | School Teacher |
| Industry | School Dept |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Nolan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Nolan
Son · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
Sibling
Joseph Nolan
Sibling · 1940 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Nolan
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Nolan
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Nolan
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Nolan
Sibling · 1940 · age 25
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01695-00064)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph B. Spear | 30 | Head | Welder | Massachusetts |
| 42 | Beatrice Spear | 26 | Wife | — | Rhode Island |
| 43 | Beatrice Spear | 3 | Daughter | — | Massachusetts |
| 44 | William O. Martin | 61 | Head | Stationary Engineer | Nova Scotia |
| 45 | Mary A. Martin | 61 | Wife | — | England |
| 46 | Fred P. B. Smalley | 61 | Head | Designing Engineer | New Hampshire |
| 47 | Lucia Smalley | 55 | Wife | — | New Hampshire |
| 48 | Harriet Smalley | 26 | Daughter | Librarian | Massachusetts |
| 49 | Louise A. Smalley | 25 | Daughter | Dietitian | Massachusetts |
| 50 | Elizabeth A. Smalley | 19 | Daughter | — | Massachusetts |
| 51 | Nola Smalley | 86 | Mother | — | Vermont |
| 52 | H. Kenneth Mcbain | 26 | Head | Insurance Agent | Massachusetts |
| 53 | Frances D. Mcbain | 25 | Wife | — | Massachusetts |
| 54 | Donald Mcbain | 2 | Son | — | Massachusetts |
| 55 | Malcolm Mcbain | 1 | Son | — | Massachusetts |
| 56 | Mary A. Nolan | 67 | Head | — | Ireland |
| 57 | Joseph Nolan | 35 | Son | Stock Clerk | Massachusetts |
| 58 | Kathleen Nolan | 32 | Daughter | Bank Clerk | Massachusetts |
| 59 | Mary E. Nolan | 30 | Daughter | School Teacher | Massachusetts |
| 60 | William Nolan THIS PERSON | 28 | Son | School Teacher | Massachusetts |
| 61 | Edward A. Nolan | 25 | Son | Mechanic | Massachusetts |
| 62 | Helen Nolan | 23 | Daughter | Clerk | Massachusetts |
| 63 | Harry Cody | 38 | Head | Teacher | Massachusetts |
| 64 | Gladys Cody | 32 | Wife | — | New York |
| 65 | Jane Cody | 8 | Daughter | — | Massachusetts |
| 66 | Edward Hollis | 55 | Head | Moulder | Quincy, Mass. |
| 67 | Viola Hollis | 57 | Wife | — | New York |
| 68 | Kenneth G. Calvin | 26 | Head | Mechanic | Canada-Eng |
| 69 | Lawrence Robertson | 25 | Head | — | Massachusetts |
| 70 | Constance Robertson | 4 | Daughter | — | Massachusetts |
| 71 | Priscilla Robertson | 1 | Daughter | — | Massachusetts |
| 72 | Charles F. Davenport | 35 | Head | Salesman | Maine |
| 73 | Ada R. Davenport | 40 | Wife | — | Massachusetts |
| 74 | Frederick Davenport | 12 | Son | — | Massachusetts |
| 75 | Alma Davenport | 8 | Daughter | — | Massachusetts |
| 76 | Clarence Stewart | 33 | Head | Clerk | Maine |
| 77 | Bernice Stewart | 33 | Wife | — | Canada-Eng |
| 78 | Rolland Stewart | 4 | Son | — | Canada-Eng |
| 79 | Albert S. Bernard | 25 | Head | Operator | Massachusetts |
| 80 | Catherine M. Bernard | 28 | Wife | Togglier | Massachusetts |
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)