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Bertha Lee — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Mountrail, North Dakota
Our Model Tree links this Bertha Lee across the 1920 and 1930 US Censuses in Mountrail, North Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1915), then head of a 9-person household.
Age 15
b. ~1915
Female
Daughter
Born: North Dakota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Mountrail, North Dakota |
| Surname | Lee |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | North Dakota |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Egan Township |
| Est. Birth Year | ~1915 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Sigrid Lee | Spouse | — | 47 | ~1883 |
| Jesse Lee | Son | — | 9 | ~1921 |
| Josie Lee | Daughter | — | 21 | ~1909 |
| Olen Lee | Son | — | 17 | ~1913 |
| Laura Lee | Daughter | — | 19 | ~1911 |
| Peter Lee | Head | — | 50 | ~1880 |
| Ruth Lee | Daughter | — | 11 | ~1919 |
| Bertha Lee | Daughter | — | 15 | ~1915 |
| Mable Lee | Daughter | — | 13 | ~1917 |
Census Appearances
1920
Mountrail, North …
Daughter, age 4
Mountrail, North Dakota · implied b. ~1916 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lee |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | North Dakota |
| Occupation | none |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Mountrail, North …
Daughter, age 15
Mountrail, North Dakota · implied b. ~1915 — 9 household members
| Surname | Lee |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Norway |
| Mother's Birthplace | North Dakota |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Bertha Lee across 2 US Census years (1920 and 1930) in Mountrail, North Dakota, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Lee
Daughter · 1930 · age 15 · b. ~1915 · North Dakota
★ You are viewing this record
Sibling
Mable Lee
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josie Lee
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Olen Lee
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lee
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jesse Lee
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Lee
Sibling · 1930 · age 19
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 — Mountrail, North Dakota
Open full size
1930 US Federal Census — Mountrail, North Dakota
Page Contents
22 people indexed on this census page (ia:1930:15thcensus1739unit:0531)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna L Knapp | 8 | Daughter | — | North Dakota |
| 2 | Adele F Knapp | 5 | Daughter | — | North Dakota |
| 3 | Laura F Matthews | 23 | Inmate | — | North Dakota |
| 4 | Pete Knudsen | 75 | Head | Farmer | Iowa |
| 5 | Anne Egheddaken | 74 | Aunt | — | Norway |
| 6 | Clarence Halvorson | 30 | Head | Farmer | Minnesota |
| 7 | Christine Halvorson | 55 | Mother | — | Minnesota |
| 8 | Gladys Halvorson | 8 | Daughter | — | North Dakota |
| 9 | Ella Halvorson | 6 | Daughter | — | North Dakota |
| 10 | Elsa Halvorson | 4 | Daughter | — | North Dakota |
| 11 | Ben Snyder | 31 | Brother-in-law | — | Iowa |
| 12 | Lois Snyder | 24 | Sister | — | Minnesota |
| 13 | Gene Snyder | 7 | Nephew | — | North Dakota |
| 14 | Peter J Lee | 50 | Head | Farmer | Norway |
| 15 | Sigrid Lee | 47 | Wife | — | North Dakota |
| 16 | Josie J Lee | 21 | Daughter | — | North Dakota |
| 17 | Laura P Lee | 19 | Daughter | — | North Dakota |
| 18 | Olen Lee | 17 | Son | Laborer | North Dakota |
| 19 | Bertha Lee THIS PERSON | 15 | Daughter | — | North Dakota |
| 20 | Mable Lee | 13 | Daughter | — | North Dakota |
| 21 | Ruth Lee | 11 | Daughter | — | North Dakota |
| 22 | Jesse Lee | 9 | Son | — | North Dakota |
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)