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Mary Grant — 1920 US Census Record
Model Tree available1920 United States Federal Census · King, Washington
Our Model Tree links this Mary Grant across the 1920, 1930 and 1940 US Censuses in King, Washington (XGBoost, ~Confirmed), with identified parents Geo & Laura — first a daughter (b.~1913), then head of a 3-person household.
Age 7
b. ~1913
Female
Daughter
Born: Washington
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | King, Washington |
| Surname | Grant |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Seattle City |
| 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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Grant | Daughter | — | 7 | ~1913 |
| Jack Grant | Son | — | 11 | ~1909 |
| Laura Grant | Spouse | — | 36 | ~1884 |
Census Appearances
1920
King, Washington
Daughter, age 7
King, Washington · implied b. ~1913 — 3 household members
| Surname | Grant |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Daughter, age 17
King, Washington · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Mae E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Daughter, age 27
King-County, Washington · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grant |
| Given Name | Mae |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | North Trunk Precinct |
| 1935 Residence (County) | King |
| Occupation | Stenog |
| Industry | Brewer |
| Class of Worker | PW |
| Hours Worked | 41 |
| Income (1939) | 125 |
| Highest Grade | No 2 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Grant across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Geo Grant (~0.92 confidence) and mother Laura Grant (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Geo Grant
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Laura Grant
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Grant
Daughter · 1920 · age 7 · b. ~1913 · Washington
★ You are viewing this record
Sibling
Jack Grant
Sibling · 1920 · 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
1920 US Federal Census — King, Washington
Open full size
1920 US Federal Census — King, Washington
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1930unit:0931)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Laura B Grant | 36 | Wife | — | Illinois |
| 52 | Jack G Grant | 11 | Son | — | Washington |
| 53 | Mary L Grant THIS PERSON | 7 | Daughter | — | Washington |
| 54 | John J Wildermuth | 38 | Head | Messenger | Switzerland |
| 55 | Irene E Wildermuth | 30 | Wife | — | Illinois |
| 56 | Jane E Wildermuth | 3 | Daughter | — | Washington |
| 57 | Jessie B Crowe | 50 | Head | — | Washington |
| 58 | Edna Crowe | 18 | Daughter | — | California |
| 59 | Edgar Crowe | 13 | Son | Newsboy | Washington |
| 60 | Sherman B Parrott | 33 | Head | Truck Driver | Canada |
| 61 | Margaret E Parrott | 31 | Wife | — | Canada |
| 62 | Dorothy Jean Parrott | 3 | Daughter | — | Canada |
| 63 | Glenn Parrott | 2 | Son | — | Washington |
| 64 | Robert Mcelhanney | 73 | Father-in-law | — | Ireland |
| 65 | Esther Mcelhanney | 73 | Mother-in-law | — | Ireland |
| 66 | Richard Co. Keefe | 41 | Head | Carpenter | Minnesota |
| 67 | Mary Keefe | 40 | Wife | — | England |
| 68 | Bernard L Keefe | 11 | Son | — | Washington |
| 69 | Converse P Farrian | 62 | Head | Bricklayer | Maine |
| 70 | Genevieve Farrian | 60 | Wife | — | Michigan |
| 71 | Guy Jones | 45 | Head | Mechanic | Iowa |
| 72 | Bertha Jones | 38 | Wife | — | Iowa |
| 73 | Reed Cohoe Jones | 14 | Son | Newsboy | Wisconsin |
| 74 | Merna Elsie Jones | 13 | Daughter | — | Wisconsin |
| 75 | Dorothy Marie Jones | 7 | Daughter | — | Wisconsin |
| 76 | John L Thompson | 40 | Head | Farmer | Missouri |
| 77 | Mary Thompson | 29 | Wife | — | Wisconsin |
| 78 | Russell Thompson | 8 | Son | — | Washington |
| 79 | Malcolm Thompson | 3 | Son | — | Washington |
| 80 | Alice Thompson | 1 | Daughter | — | Washington |
| 81 | George Hare | 42 | Head | Janitor | England |
| 82 | Edith Hare | 33 | Wife | — | England |
| 83 | Walter J Hare | 12 | Son | — | England |
| 84 | Edith Hare | 8 | Daughter | — | England |
| 85 | William Hare | 7 | Son | — | England |
| 86 | Dorothy E Hare | 3 | Daughter | — | Washington |
| 87 | Eva Marie Hare | 1 | Daughter | — | Washington |
| 88 | Lee Stamey | 50 | Head | Laundryman | North Carolina |
| 89 | Electa J Stamey | 51 | Wife | — | Virginia |
| 90 | Ruth Stamey | 24 | Daughter | Stenographer | Washington |
| 91 | Grady G Stamey | 23 | Son | — | Washington |
| 92 | Ellis Jones | 77 | Head | — | New York |
| 93 | Celia Jones | 41 | Daughter | Clerk | New York |
| 94 | Nellie Jones | 40 | Daughter | Seamstress | New York |
| 95 | Minnie Jones | 39 | Daughter | Clerk | New York |
| 96 | William Laing | 34 | Head | Boiler Maker | Scotland |
| 97 | Caroline Laing | 34 | Wife | — | England |
| 98 | Mildred Ann Laing | 5 | Daughter | — | Montana |
| 99 | George Henry Lewis | 42 | Head | Salesman | Illinois |
| 100 | Margaret E Lewis | 42 | Wife | — | Washington |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)