MD
Mary Duncan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Shasta, California
Our Model Tree links this Mary Duncan across the 1900, 1910, 1920 and 1930 US Censuses in Shasta, California (XGBoost, ~Confirmed) — first a spouse (b.~1857), then head of a 3-person household.
Age 73
b. ~1857
Female
Spouse
Born: Michigan
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Shasta, California |
| Surname | Duncan |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 18 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Township 5 Part Of Anderson Township |
| Est. Birth Year | ~1857 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Duncan | Head | — | 78 | ~1852 |
| Ross Duncan | Son | — | 34 | ~1896 |
| Mary Duncan | Spouse | — | 73 | ~1857 |
Census Appearances
1900
Shasta, California
Spouse, age 43
Shasta, California · implied b. ~1857 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Mary F |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Michigan |
| Birth Month | Feb |
| Birth Year | 1857 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1910
Shasta, California
Spouse, age 53
Shasta, California · implied b. ~1857 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Michigan |
| Years Married | 36 |
| Children Born | 8 |
| Children Living | 8 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ger. German |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1920
Shasta, California
Spouse, age 62
Shasta, California · implied b. ~1858 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Shasta, California
Spouse, age 73
Shasta, California · implied b. ~1857 — 3 household members
| Surname | Duncan |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 18 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Duncan across 4 US Census years (1900, 1910, 1920 and 1930) in Shasta, California, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Duncan
Spouse · 1930 · age 73 · b. ~1857 · California
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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 — Shasta, California
Open full size
1930 US Federal Census — Shasta, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel220:0476)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Harry R Cunningham | 38 | Head | Laborer | Indiana |
| 52 | Mamie B Cunningham | 35 | Wife | — | Indiana |
| 53 | Samuel P Cunningham | 14 | Son | — | Nebraska |
| 54 | Willie C Cunningham | 12 | Son | — | Nebraska |
| 55 | Vernon R Cunningham | 11 | Son | — | Nebraska |
| 56 | Harold A Cunningham | 9 | Son | — | Nebraska |
| 57 | Gerald W Cunningham | 7 | Son | — | Nebraska |
| 58 | Leroy D Cunningham | 6 | Son | — | Nebraska |
| 59 | Harry R Cunningham | 4 | Son | — | Nebraska |
| 60 | Melvin C Cunningham | 2 | Son | — | Nebraska |
| 61 | Morris B Cunningham | 40 | Brother | Laborer | Indiana |
| 62 | Sylvester J Cunningham | 19 | Nephew | Laborer | Indiana |
| 63 | Marjorie E Cunningham | 17 | Niece | — | Illinois |
| 64 | Harold H Howes | 39 | Head | Laborer | Wisconsin |
| 65 | Ella M Howes | 30 | Wife | — | Oregon |
| 66 | James L Howes | 3 | Son | — | California |
| 67 | Arthur E Stoker | 57 | Head | Laborer | Kansas |
| 68 | Lottie J Stoker | 49 | Wife | — | California |
| 69 | Chester A Stoker | 18 | Son | Mechanic | Oregon |
| 70 | Edrie E Stoker | 17 | Daughter | — | Oregon |
| 71 | Alice L Stoker | 15 | Daughter | — | Oregon |
| 72 | Marshall W David | 40 | Head | Laborer | California |
| 73 | Bessie M David | 32 | Wife | — | Illinois |
| 74 | Dorothy J David | 14 | Daughter | — | California |
| 75 | Gladys M David | 12 | Daughter | — | California |
| 76 | Eldon Perkins | 42 | Lodger | Laborer | Nova Scotia |
| 77 | Morton C Good | 79 | Head | Retired | Canada English |
| 78 | Anna A Good | 71 | Wife | — | Wisconsin |
| 79 | Frank F Souza | 57 | Head | Operator | California |
| 80 | Mary E Souza | 80 | Mother | — | Portugal |
| 81 | Andrew W Taggart | 48 | Head | Laborer | Indiana |
| 82 | Florence M Taggart | 48 | Wife | — | California |
| 83 | Norma V Goodwin | 7 | Granddaughter | — | California |
| 84 | Moses A James | 53 | Head | Laborer | California |
| 85 | Sarah E James | 41 | Wife | — | Washington |
| 86 | Gladys C James | 17 | Daughter | — | California |
| 87 | Marinda S Moore | 68 | Mother-in-law | — | Kentucky |
| 88 | James C Duncan | 78 | Head | Retired | Illinois |
| 89 | Mary E Duncan THIS PERSON | 73 | Wife | — | Michigan |
| 90 | Ross A Duncan | 34 | Son | Proprietor | California |
| 91 | Leonard L Ballis | 25 | Head | Welder | Utah |
| 92 | Florence Ballis | 22 | Wife | — | Utah |
| 93 | Norma M Ballis | 3 | Daughter | — | Utah |
| 94 | Jay H Ballis | 2 | Son | — | Utah |
| 95 | Charles Ryan | 32 | Lodger | Welder | Missouri |
| 96 | Richard R Donaldson | 19 | Lodger | Helper | Utah |
| 97 | Eugene J Vail | 34 | Head | Welder | Washington |
| 98 | Carl F Eaton | 52 | Head | Agent | Massachusetts |
| 99 | Genevieve B Eaton | 42 | Wife | — | California |
| 100 | Francis E Eaton | 19 | Son | Book-Keeper | California |
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)