MR
Mary Reardon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Reardon across the 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Reardon |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Haverhill city |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Haverhill City |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Billie Reardon | Daughter | — | 11 | ~1929 |
| William Reardon | Head | — | 46 | ~1894 |
| Mary Reardon | Daughter | — | 14 | ~1926 |
| Doris Reardon | Daughter | — | 15 | ~1925 |
| Ellen Reardon | Spouse | — | 41 | ~1899 |
| Lillian Reardon | Daughter | — | 17 | ~1923 |
| Mildred Reardon | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 4
Suffolk, Massachusetts · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Reardon |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Maine |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Daughter, age 14
Essex-County, Massachusetts · implied b. ~1926 — 7 household members
| Surname | Reardon |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Haverhill city |
| 1935 Residence (County) | Essex |
| Highest Grade | 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 Mary Reardon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Reardon
Daughter · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
Doris Reardon
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Reardon
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billie Reardon
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lillian Reardon
Sibling · 1940 · age 17
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-t0627-01581-00131)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eaton F. Spaulding | 43 | Head | Manager | Vermont |
| 42 | Alice Spaulding | 41 | Wife | Book Keeper | New Hampshire |
| 43 | Elizabeth Spaulding | 16 | Daughter | — | Massachusetts |
| 44 | Constance M. Spaulding | 12 | Daughter | — | Massachusetts |
| 45 | Jean E. Spaulding | 11 | Daughter | — | Massachusetts |
| 46 | Jacqueline Spaulding | 6 | Daughter | — | Massachusetts |
| 47 | Bailey S. Bartlett | 53 | Head | Assistant Cashier | Massachusetts |
| 48 | Bertha F. Bartlett | 55 | Wife | — | Massachusetts |
| 49 | Priscilla Bartlett | 25 | Daughter | Operator | Massachusetts |
| 50 | Hilda S. Bartlett | 17 | Daughter | — | Massachusetts |
| 51 | Margaret Murphy | 61 | Head | — | Massachusetts |
| 52 | Earl W. Mills | 48 | Head | Mechanic | New Hampshire |
| 53 | Ethel F. Mills | 47 | Wife | — | New Hampshire |
| 54 | Robert W. Mills | 19 | Son | New Worker | New Hampshire |
| 55 | Richard A. Mills | 18 | Son | New Worker | New Hampshire |
| 56 | Earl H. Jr. Mills | 21 | Son | Attendant | New Hampshire |
| 57 | Jane A. Mills | 19 | Daughter | — | Massachusetts |
| 58 | Judith A. Mills | 15 | Daughter | — | Massachusetts |
| 59 | Harvey R. Lightfoot | 49 | Head | Labourer | Canada |
| 60 | Gertrude F. Lightfoot | 61 | Wife | — | Vermont |
| 61 | Josephine Arahovitis | 30 | Head | — | Massachusetts |
| 62 | Helena Arahovitis | 11 | Daughter | — | Massachusetts |
| 63 | Pauline Arahovitis | 9 | Daughter | — | Massachusetts |
| 64 | John Arahovitis | 8 | Son | — | Massachusetts |
| 65 | Cyrus R. Furbish | 47 | Head | Attendant | Maine |
| 66 | Ruth M. Furbish | 41 | Wife | Saleslady | Massachusetts |
| 67 | Anthony Cogswell | 22 | Son-in-law | Clerk | Massachusetts |
| 68 | Anne V. Cogswell | 19 | Daughter | — | Massachusetts |
| 69 | William J. Reardon | 46 | Head | Foreman | Free States |
| 70 | Ellen T. Reardon | 41 | Wife | — | Massachusetts |
| 71 | Lillian E. Reardon | 17 | Daughter | — | Massachusetts |
| 72 | Doris M. Reardon | 15 | Daughter | — | Massachusetts |
| 73 | Mary E. Reardon THIS PERSON | 14 | Daughter | — | Massachusetts |
| 74 | Billie J. Reardon | 11 | Daughter | — | Massachusetts |
| 75 | Mildred A. Reardon | 9 | Daughter | — | Massachusetts |
| 76 | James M. Lamond | 49 | Head | Plasterer | Scotland |
| 77 | Ann M. Lamond | 52 | Wife | Housework | Scotland |
| 78 | Agnes M. Lamond | 28 | Daughter | Stenographer | Massachusetts |
| 79 | Paul R. Lamond | 18 | Son | — | Massachusetts |
| 80 | Robert G. Lamond | 16 | Son | — | 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)