MR
Mary Reardon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Reardon across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Joseph — first a daughter (b.~1904), then head of a 14-person household.
Age 36
b. ~1904
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 | 36 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Newburyport City |
| Additional Details | |
| Occupation | Clerk |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 750 |
| Highest Grade | Hs 4 |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Newburyport City |
| Est. Birth Year | ~1904 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Reardon | Daughter | — | 15 | ~1925 |
| Raymond Reardon | Son | — | 17 | ~1923 |
| Joseph Reardon | Head | — | 58 | ~1882 |
| Anna Reardon | Daughter | — | 30 | ~1910 |
| William Reardon | Son | — | 22 | ~1918 |
| Joseph Reardon | Son | — | 32 | ~1908 |
| Anna Reardon | Spouse | — | 59 | ~1881 |
| Elizabeth Reardon | Daughter | — | 34 | ~1906 |
| Andrea Reardon | Other | — | 3 | ~1937 |
| Doris Reardon | Other | — | 31 | ~1909 |
| Helen Reardon | Daughter | — | 19 | ~1921 |
| Robert Reardon | Son | — | 27 | ~1913 |
| Ruth Reardon | Daughter | — | 13 | ~1927 |
| Mary Reardon | Daughter | — | 36 | ~1904 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 16
Essex, Massachusetts · implied b. ~1904 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Reardon |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Saleslady |
| Industry | Dept Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Daughter, age 26
Essex, Massachusetts · implied b. ~1904 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Reardon |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Book Keeper |
| Industry | Chain Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Daughter, age 36
Essex-County, Massachusetts · implied b. ~1904 — 14 household members
| Surname | Reardon |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Newburyport City |
| Occupation | Clerk |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 750 |
| Highest Grade | Hs 4 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Reardon (~0.92 confidence) and father Joseph Reardon (~0.92 confidence) and father Joseph Reardon (~0.92 confidence) and mother Anna Reardon (~0.92 confidence) and mother Anna Reardon (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Reardon
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Joseph Reardon
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Joseph Reardon
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Anna Reardon
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Anna Reardon
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Reardon
Daughter · 1940 · age 36 · b. ~1904 · Massachusetts
★ You are viewing this record
Sibling
Ruth Reardon
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Reardon
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Reardon
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Reardon
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Reardon
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Reardon
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Reardon
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Reardon
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Reardon
Sibling · 1940 · age 32
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-t0627-01587-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gertrude M. Stack | 36 | Wife | — | Massachusetts |
| 42 | Robert E. Jr. Stack | 16 | Son | — | Massachusetts |
| 43 | Virginia H. Stack | 13 | Daughter | — | Massachusetts |
| 44 | Jacob H. Diamond | 38 | Head | Electrician | New Hampshire |
| 45 | Hilda G. Diamond | 36 | Wife | — | Massachusetts |
| 46 | Natalie R. Diamond | 9 | Daughter | — | Massachusetts |
| 47 | Stanley R. Diamond | 7 | Son | — | Massachusetts |
| 48 | Arthur N. Young | 47 | Head | Foreman | Massachusetts |
| 49 | Marcella D. Young | 46 | Wife | — | Massachusetts |
| 50 | Arthur N. Jr. Young | 25 | Son | — | Massachusetts |
| 51 | Virginia M. Young | 17 | Daughter | — | Massachusetts |
| 52 | Barbara R. Young | 10 | Daughter | — | Massachusetts |
| 53 | Albert E. Rochette | 39 | Head | Clerk | Massachusetts |
| 54 | Celina M. Rochette | 40 | Wife | — | Canada French |
| 55 | Edward P. Murphy | 36 | Head | Clerk | Massachusetts |
| 56 | Abigail G. Murphy | 36 | Wife | — | Massachusetts |
| 57 | Edward P. Jr. Murphy | 2 | Son | — | Massachusetts |
| 58 | Emma L. Lunt | 65 | Head | — | Massachusetts |
| 59 | Frederick Maguire | 34 | Head | Owner | Massachusetts |
| 60 | Elizabeth B. Maguire | 33 | Wife | Clerk | Vermont |
| 61 | Frederick E. Maguire | 4 | Son | — | Massachusetts |
| 62 | Elizabeth R. Caldwell | 20 | Maid | Maid | Massachusetts |
| 63 | Joseph L. Sr. Reardon | 58 | Head | Clerk | Massachusetts |
| 64 | Anna A. Reardon | 59 | Wife | — | Massachusetts |
| 65 | Mary E. Reardon THIS PERSON | 36 | Daughter | Clerk | Massachusetts |
| 66 | Elizabeth A. Reardon | 34 | Daughter | Checker | Massachusetts |
| 67 | Anna G. Reardon | 30 | Daughter | Clerk | Massachusetts |
| 68 | Robert V. Reardon | 27 | Son | Salesman | Massachusetts |
| 69 | William L. Reardon | 22 | Son | Farm Hand | Massachusetts |
| 70 | Helen E. Reardon | 19 | Daughter | New Worker | Massachusetts |
| 71 | Raymond J. Reardon | 17 | Son | — | Massachusetts |
| 72 | Eleanor W. Reardon | 15 | Daughter | — | Massachusetts |
| 73 | Ruth A. Reardon | 13 | Daughter | — | Massachusetts |
| 74 | Joseph L. Jr. Reardon | 32 | Son | Foreman | Massachusetts |
| 75 | Doris A. Reardon | 31 | Daughter in law | Clerk | Massachusetts |
| 76 | Andrea Reardon | 3 | Granddaughter | — | Massachusetts |
| 77 | Mary A. Casey | 63 | Head | — | Massachusetts |
| 78 | Elizabeth A. Casey | 65 | Sister in law | — | Massachusetts |
| 79 | David A. Casey | 63 | Brother in law | — | Massachusetts |
| 80 | Harriet N. Currier | 61 | Head | — | Massachusetts |
Pedigree Summary
Mary + 9 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)