KM
Katherine Martin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Katherine Martin across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 9-person household.
Age 7
b. ~1923
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Martin |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Canada-English |
| Additional Details | |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Saxonville Village |
| Est. Birth Year | ~1923 |
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 1930 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Mary Martin | Spouse | — | 45 | ~1885 |
| William Martin | Son | — | 16 | ~1914 |
| Owen Martin | Son | — | 12 | ~1918 |
| John Martin | Head | — | 46 | ~1884 |
| John Martin | Son | — | 9 | ~1921 |
| Katherine Martin | Daughter | — | 7 | ~1923 |
| Philip Martin | Son | — | 11 | ~1919 |
| Mary Martin | Daughter | — | 14 | ~1916 |
| Annie Martin | Daughter | — | 19 | ~1911 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1923 — 9 household members
| Surname | Martin |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Canada-English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 17
Middlesex-County, Massachusetts · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Kathleen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Framingham town |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | Hs 3 |
| 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 Katherine Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Katherine Martin
Daughter · 1930 · age 7 · b. ~1923 · Massachusetts
★ You are viewing this record
Sibling
Owen Martin
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annie Martin
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Martin
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Martin
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Martin
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Martin
Sibling · 1930 · age 11
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
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel919:0046)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Katherine Mcdonald | 16 | Daughter | — | Massachusetts |
| 52 | Mary Mcdonald | 14 | Daughter | — | Massachusetts |
| 53 | Ruth A Mcdonald | 12 | Daughter | — | Massachusetts |
| 54 | Florence Mcdonald | 11 | Daughter | — | Massachusetts |
| 55 | Helen Mcdonald | 8 | Daughter | — | Massachusetts |
| 56 | Annie Mcdonald | 3 | Daughter | — | Massachusetts |
| 57 | Samuel Gates | 49 | Head | Weaver | New York |
| 58 | Ada Gates | 47 | Wife | — | Connecticut |
| 59 | William Gates | 12 | Son | — | Connecticut |
| 60 | Ruth Gates | 8 | Daughter | — | Massachusetts |
| 61 | Thomas Wilson | 53 | Head | Foreman | Scotland |
| 62 | Georgina Wilson | 53 | Wife | — | Scotland |
| 63 | Catherine Adams | 31 | Daughter | — | Scotland |
| 64 | Paul Lague | 47 | Head | Foreman | Canada-French |
| 65 | Blanche Lague | 37 | Wife | — | Canada-French |
| 66 | Harold Lague | 17 | Son | — | Canada-French |
| 67 | Rita Lague | 12 | Daughter | — | Massachusetts |
| 68 | Carmen Lague | 7 | Daughter | — | Massachusetts |
| 69 | Paul Migneault | 38 | Head | Loom Fixer | Massachusetts |
| 70 | Georgina Migneault | 37 | Wife | — | Canada-French |
| 71 | Thelma Migneault | 16 | Daughter | — | Canada-French |
| 72 | Earl Migneault | 14 | Son | — | Massachusetts |
| 73 | Marcella Migneault | 12 | Daughter | — | Massachusetts |
| 74 | Paul Migneault | 6 | Son | — | Massachusetts |
| 75 | Claire Migneault | 3 | Daughter | — | Massachusetts |
| 76 | Athas Mihailidis | 40 | Head | Tailor | Greece |
| 77 | Myron W Wilkins | 52 | Head | Watchman | Massachusetts |
| 78 | Jessie M Wilkins | 48 | Wife | — | Massachusetts |
| 79 | John Martin | 46 | Head | Chauffeur | Irish Free State |
| 80 | Mary Martin | 45 | Wife | — | Canada-English |
| 81 | Annie Martin | 19 | Daughter | Nurse | Massachusetts |
| 82 | Mary Martin | 14 | Daughter | — | Massachusetts |
| 83 | William Martin | 16 | Son | — | Massachusetts |
| 84 | Owen Martin | 12 | Son | — | Massachusetts |
| 85 | Philip Martin | 11 | Son | — | Massachusetts |
| 86 | John Martin | 9 | Son | — | Massachusetts |
| 87 | Katherine Martin THIS PERSON | 7 | Daughter | — | Massachusetts |
| 88 | George Sutton | 27 | Head | Analyst | England |
| 89 | Edith G Sutton | 26 | Wife | — | Massachusetts |
| 90 | John Morris | 54 | Head | Foreman | Irish Free State |
| 91 | Margaret Morris | 49 | Wife | — | Irish Free State |
| 92 | Frank Morris | 24 | Son | — | Massachusetts |
| 93 | Frank Read | 34 | Head | Weaver | New York |
| 94 | Blanche Read | 31 | Wife | Weaver | New York |
| 95 | Elliot Read | 4 | Son | — | New York |
| 96 | Mary A Pinder | 76 | Head | — | New Hampshire |
| 97 | Lotta R Cornish | 52 | Niece | Teacher | Massachusetts |
| 98 | Charles S Andress | 47 | Lodger | Foreman | Massachusetts |
| 99 | Annie M Mihailidis | 36 | Cousin | Tailoress | Massachusetts |
| 100 | Marguerite Mihailidis | 8 | Cousin | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)