JM
John Mullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Mullen across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Mullen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Boston |
| Est. Birth Year | ~1927 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Mary Mullen | Daughter | — | 15 | ~1925 |
| Luke Mullen | Head | — | 50 | ~1890 |
| James Mullen | Son | — | 10 | ~1930 |
| Thomas Mullen | Son | — | 5 | ~1935 |
| Patrick Mullen | Son | — | 8 | ~1932 |
| John Mullen | Son | — | 13 | ~1927 |
| Daniel Mullen | Son | — | 3 | ~1937 |
| Luke Mullen | Son | — | 16 | ~1924 |
| Mary Mullen | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 2
Suffolk, Massachusetts · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mullin |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 13
Suffolk-County, Massachusetts · implied b. ~1927 — 9 household members
| Surname | Mullen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | City of Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | No 7 |
| 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 John Mullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mullen
Son · 1940 · age 13 · b. ~1927 · Massachusetts
★ You are viewing this record
Sibling
Luke Mullen
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mullen
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mullen
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mullen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Mullen
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Mullen
Sibling · 1940 · age 3
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01659-00491)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sophie Madalinski | 44 | Wife | — | Russia |
| 2 | Richard Malinowski | 46 | Head | Operator | Michigan |
| 3 | Stella Malinowski | 43 | Wife | — | Massachusetts |
| 4 | Robert Malinowski | 12 | Son | — | Massachusetts |
| 5 | Elizabeth Morris | 68 | Head | — | Massachusetts |
| 6 | George Morris | 33 | Son | Laborer | Massachusetts |
| 7 | Augustine Jr. Morris | 31 | Son | Laborer | Massachusetts |
| 8 | Victor L. Morris | 30 | Son | Laborer | Massachusetts |
| 9 | Rita E. Morris | 23 | Daughter | — | Massachusetts |
| 10 | Catherine E. Baker | 69 | Sister | — | Massachusetts |
| 11 | Catherine Twohig | 44 | Cousin | Binder | Massachusetts |
| 12 | John Thaduck | 44 | Head | Laborer | Russia |
| 13 | Helen Thaduck | 47 | Wife | — | Poland |
| 14 | Joseph Thaduck | 21 | Son | Brakeman | Massachusetts |
| 15 | Albert Thaduck | 19 | Son | Laborer | Massachusetts |
| 16 | Pete Thaduck | 16 | Son | — | Massachusetts |
| 17 | Walter Thaduck | 13 | Son | — | Massachusetts |
| 18 | William Robinson | 45 | Head | Laborer | Massachusetts |
| 19 | Lucille Robinson | 42 | Wife | — | Massachusetts |
| 20 | Leonard Robinson | 10 | Son | — | Massachusetts |
| 21 | Barbara Robinson | 18 | Son | — | Massachusetts |
| 22 | Lena G. Robinson | 16 | Daughter | — | Massachusetts |
| 23 | William Jr. Robinson | 15 | Son | — | Massachusetts |
| 24 | Mary T. Robinson | 12 | Son | — | Massachusetts |
| 25 | Luke Sr. Mullen | 50 | Head | Laborer | Eire |
| 26 | Mary K. Mullen | 39 | Wife | — | Eire |
| 27 | Luke Jr. Mullen | 16 | Son | — | Massachusetts |
| 28 | Mary Mullen | 15 | Daughter | — | Massachusetts |
| 29 | John Mullen THIS PERSON | 13 | Son | — | Massachusetts |
| 30 | James Mullen | 10 | Son | — | Massachusetts |
| 31 | Patrick Mullen | 8 | Son | — | Massachusetts |
| 32 | Thomas Mullen | 5 | Son | — | Massachusetts |
| 33 | Daniel Mullen | 3 | Son | — | Massachusetts |
| 34 | Johanna Martin | 58 | Head | — | Eire |
| 35 | Margaret Case | 61 | Sister | — | Eire |
| 36 | Daniel Case | 56 | Brother | — | Eire |
| 37 | William Case | 38 | Son | Laborer | Massachusetts |
| 38 | Catherine Kinsella | 69 | Head | — | Eire |
| 39 | Michael Kinsella | 37 | Son | Time Keeper | Massachusetts |
| 40 | Thomas Waters | 65 | Lodger | — | 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)