ML
Mary Lawrence — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Diego, California
Our Model Tree links this Mary Lawrence across the 1930 and 1940 US Censuses in San Diego, California (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 12-person household.
Age 17
b. ~1913
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Diego, California |
| Surname | Lawrence |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kansas |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Lakeside Unincorporated Institution |
| Est. Birth Year | ~1913 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Trottie Lawrence | Daughter | — | 13 | ~1917 |
| Eva Lawrence | Daughter | — | 17 | ~1913 |
| Sabina Lawrence | Daughter | — | 5 | ~1925 |
| Opal Lawrence | Daughter | — | 9 | ~1921 |
| Alice Lawrence | Daughter | — | 11 | ~1919 |
| Mary Lawrence | Daughter | — | 17 | ~1913 |
| Inez Lawrence | Daughter | — | 15 | ~1915 |
| Joseph Lawrence | Head | — | 50 | ~1880 |
| Eva Lawrence | Other | — | 42 | ~1888 |
| Foster Lawrence | Son | — | 21 | ~1909 |
| Philip Lawrence | Son | — | 3 | ~1927 |
| James Lawrence | Son | — | 7 | ~1923 |
Census Appearances
1930
San Diego, …
Daughter, age 17
San Diego, California · implied b. ~1913 — 12 household members
| Surname | Lawrence |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Spouse, age 27
San-Diego-County, California · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawrence |
| Given Name | Margaret P |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Diego city |
| 1935 Residence (County) | San Diego |
| Occupation | Stenographer |
| Industry | State Division of Highways |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 236 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Lawrence across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lawrence
Daughter · 1930 · age 17 · b. ~1913 · California
★ You are viewing this record
Sibling
Trottie Lawrence
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Opal Lawrence
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eva Lawrence
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Lawrence
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Inez Lawrence
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lawrence
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Lawrence
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sabina Lawrence
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Foster Lawrence
Sibling · 1930 · age 21
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 — San Diego, California
Open full size
1930 US Federal Census — San Diego, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel190:0064)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Eleanor L. Sherwood | 60 | Wife-H | None | Michigan |
| 52 | Harry E. Smith | 50 | Head | Carpenter | New York |
| 53 | Susan S. Smith | 46 | Wife-H | None | New York |
| 54 | H. Rowland | 8 | Adopted Son | None | California |
| 55 | Jacob J. Saytar | 34 | Head | Farmer | Austria |
| 56 | Mary Saytar | 50 | Wife-H | None | Kentucky |
| 57 | Lemuel F. Wetzel | 26 | Head | Tractor Operator | South Dakota |
| 58 | Gertrude P. Wetzel | 20 | Wife-H | None | North Dakota |
| 59 | Betty Lou Wetzel | 1 | Daughter | None | North Dakota |
| 60 | Nettie Evans | 58 | Mother-in-law | None | Iowa |
| 61 | Raymond C. Evans | 30 | Brother-in-law | Lineman | Iowa |
| 62 | Warren L. Evans | 18 | Brother-in-law | Salesman | North Dakota |
| 63 | Henry A. Mccall | 86 | Head | Farmer | New York |
| 64 | Rosalind L. Mccall | 74 | Wife-H | None | Missouri |
| 65 | Edmon L. Muse | 31 | Head | Laborer | Missouri |
| 66 | Delia L. Muse | 29 | Wife-H | None | Missouri |
| 67 | Lola A. Muse | 7 | Daughter | None | Missouri |
| 68 | Donald L. Muse | 2 | Son | None | Kansas |
| 69 | Joseph W. Lawrence | 50 | Head | Orderly | Indiana |
| 70 | Eva B. Lawrence | 42 | Wife-H | None | Kansas |
| 71 | Foster W. Lawrence | 21 | Son | Laborer | Kansas |
| 72 | Eva B. Lawrence | 17 | Daughter | None | California |
| 73 | Mary A. Lawrence THIS PERSON | 17 | Daughter | None | California |
| 74 | Inez P. Lawrence | 15 | Daughter | None | California |
| 75 | Trottie J. Lawrence | 13 | Daughter | None | California |
| 76 | Alice R. Lawrence | 11 | Daughter | None | California |
| 77 | Opal W. Lawrence | 9 | Daughter | None | California |
| 78 | James L. Lawrence | 7 | Son | None | California |
| 79 | Sabina V. Lawrence | 5 | Daughter | None | California |
| 80 | Philip J. Lawrence | 3 | Son | None | California |
| 81 | Harry E. Green | 43 | Head | Farmer | Kansas |
| 82 | Tashisaku Takahara | 40 | Head | Care Taker | Japan |
| 83 | Kiku Takahara | 30 | Wife-H | Laborer | Japan |
| 84 | Phie Takahara | 9 | Daughter | None | California |
| 85 | Tsukasa Takahara | 7 | Son | None | California |
| 86 | Tami Takahara | 5 | Daughter | None | California |
| 87 | Fumio Takahara | 1 | Son | None | California |
| 88 | Columbus D. Rich | 68 | Head | Farmer | Alabama |
| 89 | Mary E. Rich | 67 | Wife-H | None | Iowa |
| 90 | Robert L. Swearengin | 32 | Head | Retail Merchant | Missouri |
| 91 | Onar M. Swearengin | 31 | Wife-H | Book Keeper | Nebraska |
| 92 | Charles T. Sullivan | 61 | Head | Farmer | New York |
| 93 | Anna K. Sullivan | 44 | Wife-H | None | New York |
| 94 | Terence B. Sullivan | 10 | Son | None | California |
| 95 | John W. Andrew | 39 | Head | Farmer | California |
| 96 | Clarice J. Andrew | 45 | Wife-H | None | Kansas |
| 97 | Peter W. Crum | 68 | Head | Farmer | Indiana |
| 98 | Mary A. Crum | 60 | Wife-H | None | Georgia |
| 99 | Eugene M. Guss | 52 | Head | Farmer | Illinois |
| 100 | Edith M. Guss | 36 | Wife-H | None | Northern Ireland |
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)