MK
Mary Kerr — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Ramsey, North Dakota
Our Model Tree links this Mary Kerr across the 1910, 1920 and 1930 US Censuses in Ramsey, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 2-person household.
Age 56
b. ~1874
Female
Head
Born: Wisconsin
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Ramsey, North Dakota |
| Surname | Kerr |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| Father's Birthplace | Vermont |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Radio Set | R |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Lawton Village |
| Est. Birth Year | ~1874 |
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.
2 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Kerr | Daughter | — | 20 | ~1910 |
| Mary Kerr | Head | — | 56 | ~1874 |
Census Appearances
1910
Ramsey, North …
Spouse, age 37
Ramsey, North Dakota · implied b. ~1873 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Years Married | 19 |
| Father's Birthplace | Vermont |
| Mother's Birthplace | New York |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1920
Ramsey, North …
Spouse, age 46
Ramsey, North Dakota · implied b. ~1874 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kerr |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| Father's Birthplace | Vermont |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Ramsey, North …
Head, age 56
Ramsey, North Dakota · implied b. ~1874 — 2 household members
| Surname | Kerr |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Wisconsin |
| Father's Birthplace | Vermont |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Radio Set | R |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Kerr across 3 US Census years (1910, 1920 and 1930) in Ramsey, North Dakota, using XGBoost record linkage.
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This person
Anchor record
Mary Kerr
Head · 1930 · age 56 · b. ~1874 · North Dakota
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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 — Ramsey, North Dakota
Open full size
1930 US Federal Census — Ramsey, North Dakota
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1740unit:0822)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David L Davison | 58 | Head | Farmer | Indiana |
| 2 | Annie M Davison | 48 | Wife-H | — | Wisconsin |
| 3 | Cecil D Davison | 26 | Son | Farm Laborer | North Dakota |
| 4 | Ole Ros | 35 | Head | Grain Buyer | Norway |
| 5 | Leona M Ros | 25 | Wife-H | — | Wisconsin |
| 6 | Marion R Ros | 6 | Son | None | Minnesota |
| 7 | David B Ros | 5 | Son | None | Minnesota |
| 8 | Leola M Ros | 1 | Daughter | None | Minnesota |
| 9 | Mabel M Abbey | 20 | Servant | Servant | North Dakota |
| 10 | Bessie B Gibbons | 44 | Head | Clerk | North Dakota |
| 11 | Lola J Gibbons | 20 | Daughter | None | North Dakota |
| 12 | Mary E Kerr THIS PERSON | 56 | Head | None | Wisconsin |
| 13 | Helen C Kerr | 20 | Daughter | Laborer | Minnesota |
| 14 | Joseph F Baleh | 25 | Head | Farmer | North Dakota |
| 15 | Edna U Baleh | 25 | Wife-H | None | North Dakota |
| 16 | Stanley J Baleh | 1 | Son | None | North Dakota |
| 17 | J Roy Jechort | 28 | Head | Banker | North Dakota |
| 18 | Ethel V Jechort | 21 | Wife-H | Bookkeeper | North Dakota |
| 19 | Leola V Jechort | 4 | Daughter | None | North Dakota |
| 20 | Roy W Jechort | 2 | Son | None | North Dakota |
| 21 | William G Jechort | 0 | Son | None | North Dakota |
| 22 | Alexander Courtney | 43 | Head | Laborer | North Ireland |
| 23 | Margaret Courtney | 37 | Wife-H | None | North Ireland |
| 24 | Lillian M Courtney | 18 | Daughter | None | North Dakota |
| 25 | Grace M Courtney | 15 | Daughter | None | North Dakota |
| 26 | William J Courtney | 11 | Son | None | North Dakota |
| 27 | James B Courtney | 10 | Son | None | North Dakota |
| 28 | Floyd U Courtney | 5 | Son | None | North Dakota |
| 29 | Alanson H Kops | 33 | Head | Salesman | North Dakota |
| 30 | Edna I Kops | 26 | Wife-H | None | North Dakota |
| 31 | Jeanette M Kirkeby | 22 | Roomer | Teacher | North Dakota |
| 32 | Mike Smith | 33 | Head | Laborer | Austria |
| 33 | Maggie Smith | 26 | Wife-H | None | Minnesota |
| 34 | Andrew Smith | 8 | Son | None | North Dakota |
| 35 | Ronald J Smith | 3 | Son | None | North Dakota |
| 36 | Floyd E Henderson | 36 | Head | Ethyl Corp | Indiana |
| 37 | Ella C Henderson | 35 | Wife-H | None | Iowa |
| 38 | Forrest E Henderson | 7 | Son | None | North Dakota |
| 39 | Hans Olsen | 40 | Head | Retail Merchant | Norway |
| 40 | Mabel E Olsen | 33 | Wife-H | None | North Dakota |
| 41 | Raymond L Olsen | 12 | Son | None | North Dakota |
| 42 | Dorothy D Olsen | 8 | Daughter | None | North Dakota |
| 43 | Robert E Olsen | 4 | Son | None | North Dakota |
| 44 | Willard D Olsen | 1 | Son | None | North Dakota |
| 45 | Charles G Kops | 65 | Head | Manager | Minnesota |
| 46 | Annie E Kops | 55 | Wife-H | None | Canada English |
| 47 | Charles W Jr Kops | 15 | Son | None | North Dakota |
| 48 | Agnes L Courtney | 16 | Servant | Servant | North Dakota |
| 49 | Ervin D Christian | 61 | Head | Mail Carrier | Pennsylvania |
| 50 | Evalena Christian | 46 | Wife-H | None | Canada English |
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)