JG
John Grimes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Grimes across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Grimes |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | S-8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston |
| 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 John | Age | Birth yr |
|---|---|---|---|---|
| Marie Grimes | Daughter | — | 19 | ~1921 |
| William Grimes | Son | — | 16 | ~1924 |
| William Grimes | Head | — | 53 | ~1887 |
| John Grimes | Son | — | 14 | ~1926 |
| Katherine Grimes | Daughter | — | 11 | ~1929 |
| Mary Grimes | Spouse | — | 46 | ~1894 |
| James Grimes | Son | — | 18 | ~1922 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 4
Suffolk, Massachusetts · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grimes |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 14
Suffolk-County, Massachusetts · implied b. ~1926 — 7 household members
| Surname | Grimes |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Income (1939) | 0 |
| Highest Grade | S-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 John Grimes across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Grimes
Son · 1940 · age 14 · b. ~1926 · Massachusetts
★ You are viewing this record
Sibling
James Grimes
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Grimes
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Grimes
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Grimes
Sibling · 1940 · age 16
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-t0627-01679-00382)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Clara J. Hughes | 37 | Wife | — | Massachusetts |
| 42 | Audrey C. Hughes | 15 | Daughter | — | Massachusetts |
| 43 | Elizabeth M. Walther | 79 | Mother-in-law | — | Massachusetts |
| 44 | Robert A. Jr. Gaston | 54 | Head | — | Massachusetts |
| 45 | Marie C. Gaston | 54 | Wife | Architect | Sweden |
| 46 | Marie C. Gaston | 12 | Daughter | — | Massachusetts |
| 47 | Alfred Rehder | 76 | Head | — | Germany |
| 48 | Anneliese Rehder | 64 | Wife | Botanist | Germany |
| 49 | Gerhard C. Rehder | 31 | Son | Teacher | Massachusetts |
| 50 | Henry P. Walter | 67 | Head | — | Massachusetts |
| 51 | Henry P. Jr. Walter | 29 | Son | Salesman | New York |
| 52 | William P. Grimes | 53 | Head | President & Treasurer | Rhode Island |
| 53 | Mary E. Grimes | 46 | Wife | — | Massachusetts |
| 54 | Marie L. Grimes | 19 | Daughter | — | Massachusetts |
| 55 | James F. Grimes | 18 | Son | — | Massachusetts |
| 56 | William P. Jr. Grimes | 16 | Son | — | Massachusetts |
| 57 | John J. Grimes THIS PERSON | 14 | Son | — | Massachusetts |
| 58 | Katherine D. Grimes | 11 | Daughter | — | Massachusetts |
| 59 | Olinda A. Brady | 55 | Head | — | Massachusetts |
| 60 | Stella M. Brady | 47 | Sister | — | Massachusetts |
| 61 | John J. Mullen | 51 | Head | Private Secretary | Massachusetts |
| 62 | Mary O. Mullen | 45 | Wife | Investigator | Massachusetts |
| 63 | Joseph F. Mullen | 17 | Son | — | Massachusetts |
| 64 | Mary M. Mullen | 15 | Daughter | — | Massachusetts |
| 65 | John Mullen | 13 | Son | — | Massachusetts |
| 66 | James Mullen | 11 | Son | — | Massachusetts |
| 67 | Emerson P. Marchi | 60 | Head | Police Lieutenant | Canada-English |
| 68 | Edith A. Marchi | 64 | Wife | — | Massachusetts |
| 69 | Jacob G. Ely | 79 | Head | — | Massachusetts |
| 70 | Florence C. Ely | 42 | Daughter | Stenographer | Massachusetts |
| 71 | William S. Harrow | 61 | Head | Traveling Salesman | Wales |
| 72 | Louise E. Harrow | 54 | Wife | — | Massachusetts |
| 73 | Harry S. Broadbent | 64 | Head | — | Massachusetts |
| 74 | Caroline M. Broadbent | 65 | Wife | — | Massachusetts |
| 75 | Arthur C. Pingree | 44 | Head | Chauffeur | Massachusetts |
| 76 | Elizabeth C. Pingree | 36 | Wife | — | Massachusetts |
| 77 | Thomas H. Malvey | 43 | Head | Police Officer | Massachusetts |
| 78 | Mary C. Malvey | 41 | Wife | — | Massachusetts |
| 79 | Thomas H. Jr. Malvey | 15 | Son | — | Massachusetts |
| 80 | Mary J. Malvey | 13 | Daughter | — | 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)