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Mary Larsen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Salt Lake, Utah
Our Model Tree links this Mary Larsen across the 1920, 1930 and 1940 US Censuses in Salt Lake, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 7-person household.
Age 35
b. ~1895
Female
Spouse
Born: Colorado
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Salt Lake, Utah |
| Surname | Larsen |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 18 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Jugoslavia |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1895 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Larsen | Spouse | — | 35 | ~1895 |
| Mary Bruss | Other | — | 56 | ~1874 |
| Carl Larsen | Son | — | 12 | ~1918 |
| Mary Larsen | Daughter | — | 4 | ~1926 |
| Carl Larsen | Head | — | 48 | ~1882 |
| Lillie Larsen | Daughter | — | 3 | ~1927 |
| Robert Larsen | Son | — | 7 | ~1923 |
Census Appearances
1920
Salt Lake, …
Spouse, age 24
Salt Lake, Utah · implied b. ~1896 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | Maud |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Salt Lake, …
Spouse, age 35
Salt Lake, Utah · implied b. ~1895 — 7 household members
| Surname | Larsen |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 18 |
| Father's Birthplace | Czechoslovakia |
| Mother's Birthplace | Jugoslavia |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
Spouse, age 45
Salt-Lake-County, Utah · implied b. ~1895 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Larsen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Larsen
Spouse · 1930 · age 35 · b. ~1895 · Utah
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Salt Lake, Utah
Open full size
1930 US Federal Census — Salt Lake, Utah
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2418unit:0288)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | P. J. Pratt | 47 | Head | Manager | England |
| 2 | Maude Pratt | 44 | Wife | — | Washington |
| 3 | Leo Pratt | 22 | Son | Commercial | Washington |
| 4 | Hilda Pratt | 23 | Daughter | — | California |
| 5 | James Pratt | 17 | Son | — | Canada-English |
| 6 | Lyman S. Wood | 35 | Head | Insurance Agent | Utah |
| 7 | Alice J. Wood | 35 | Wife | — | Utah |
| 8 | Julia E. Wood | 9 | Daughter | — | Utah |
| 9 | Alice M. Wood | 4 | Daughter | — | Utah |
| 10 | Florence J. Wood | 2 | Daughter | — | Utah |
| 11 | Fred Peffers | 36 | Head | Dealer | Poland |
| 12 | Cecilia Peffers | 30 | Wife | — | New York |
| 13 | Jerome B. Peffers | 12 | Son | — | Utah |
| 14 | Emanuel M. Peffers | 10 | Son | — | Utah |
| 15 | Thomas M. Woolley | 35 | Head | Bookkeeper | Utah |
| 16 | J. Wilda Woolley | 35 | Wife | — | Utah |
| 17 | Elaine Woolley | 15 | Daughter | — | Utah |
| 18 | Calvin Woolley | 10 | Son | — | Utah |
| 19 | Ruth Woolley | 7 | Son | — | Utah |
| 20 | J. J. Hefferon | 44 | Head | Conductor | Iowa |
| 21 | Oletta Hefferon | 31 | Wife | — | Utah |
| 22 | Raehryn Hefferon | 11 | Daughter | — | Utah |
| 23 | Jane Hefferon | 9 | Daughter | — | Utah |
| 24 | Donna Hefferon | 6 | Daughter | — | Utah |
| 25 | Mary H. Hefferon | 5 | Daughter | — | Utah |
| 26 | Joe Hefferon | 2 | Son | — | Utah |
| 27 | Cyril H. Bullock | 28 | Head | Moulder | Utah |
| 28 | Josephine R. Bullock | 25 | Wife | — | Utah |
| 29 | Cyril K. Bullock | 5 | Son | — | Utah |
| 30 | David J. Bullock | 2 | Son | — | Utah |
| 31 | Joyce Bullock | 0 | Daughter | — | Utah |
| 32 | Carl Larsen | 48 | Head | Mechanic Automobile | Norway |
| 33 | Mary A. Larsen THIS PERSON | 35 | Wife | — | Colorado |
| 34 | Carl J. Larsen | 12 | Son | — | Utah |
| 35 | Robert J. Larsen | 7 | Son | — | California |
| 36 | Mary Larsen | 4 | Daughter | — | California |
| 37 | Lillie C. Larsen | 3 | Daughter | — | Utah |
| 38 | Mary Bruss | 56 | Mother-in-law | Housekeeper | Jugoslavia |
| 39 | Axel Tingwall | 49 | Head | Blacksmith | Sweden |
| 40 | Nelsine Tingwall | 50 | Wife | — | Norway |
| 41 | Florence Tingwall | 18 | Daughter | — | Utah |
| 42 | Axel Tingwall | 17 | Son | — | Utah |
| 43 | Helen Tingwall | 15 | Daughter | — | Utah |
| 44 | Edward Tingwall | 12 | Son | — | Utah |
| 45 | Arnel Tingwall | 8 | Son | — | Utah |
| 46 | Gertrude Mitchell | 47 | Head | — | England |
| 47 | Lorraine Mitchell | 20 | Daughter | Stenographer | Utah |
| 48 | Richard Mitchell | 17 | Son | — | Utah |
| 49 | Clare Whitley | 8 | Lodger | — | Idaho |
| 50 | William Nutter | 39 | Head | Foreman | England |
Related Census Records
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)