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Mary Mckay — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Cavalier, North Dakota
Our Model Tree links this Mary Mckay across the 1910 and 1920 US Censuses in Cavalier, North Dakota (XGBoost, ~Confirmed) — first a daughter (b.~1908), then head of a 4-person household.
Age 12
b. ~1908
Female
Daughter
Born: North Dakota
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Cavalier, North Dakota |
| Surname | McKay |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Township / Ward | Milton Village |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ellen Mckay | Spouse | — | 53 | ~1867 |
| Rachel Mckay | Daughter | — | 17 | ~1903 |
| Angus Mckay | Head | — | 59 | ~1861 |
| Mary Mckay | Daughter | — | 12 | ~1908 |
Census Appearances
1910
Cavalier, North …
Daughter, age 3
Cavalier, North Dakota · implied b. ~1907 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McKay |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1920
Cavalier, North …
Daughter, age 12
Cavalier, North Dakota · implied b. ~1908 — 4 household members
| Surname | McKay |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Canada |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| 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 Mary Mckay across 2 US Census years (1910 and 1920) in Cavalier, North Dakota, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mckay
Daughter · 1920 · age 12 · b. ~1908 · North Dakota
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Sibling
Rachel Mckay
Sibling · 1920 · age 17
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 — Cavalier, North Dakota
Open full size
1920 US Federal Census — Cavalier, North Dakota
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1333unit:0172)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Christ Ofstedahl | 50 | Head | Farmer | Norway |
| 2 | Hellen Ofstedahl | 49 | Wife | — | Wisconsin |
| 3 | Norma L Ofstedahl | 17 | Daughter | — | North Dakota |
| 4 | Victor L Ofstedahl | 12 | Son | — | North Dakota |
| 5 | Angus Mckay | 59 | Head | — | Canada |
| 6 | Ellen Mckay | 53 | Wife | — | Canada |
| 7 | Rachel B Mckay | 17 | Daughter | — | North Dakota |
| 8 | Mary Mckay THIS PERSON | 12 | Daughter | — | North Dakota |
| 9 | Thomas Gillespie | 32 | Head | Farmer | North Dakota |
| 10 | Annie Gillespie | 32 | Wife | — | Scotland |
| 11 | Thomas J Gillespie | 10 | Son | — | North Dakota |
| 12 | Susan A Gillespie | 9 | Daughter | — | North Dakota |
| 13 | Dorothy M Gillespie | 8 | Daughter | — | North Dakota |
| 14 | Margaret R Gillespie | 4 | Daughter | — | North Dakota |
| 15 | Jimmy E Gillespie | 2 | Son | — | North Dakota |
| 16 | Frank Delling | 60 | Head | Telephone Operator | Michigan |
| 17 | Grace Delling | 50 | Wife | — | Scotland |
| 18 | Frank E Delling | 23 | Son | Farm Labor | North Dakota |
| 19 | George D Delling | 21 | Son | Lineman | North Dakota |
| 20 | Evelyn V Delling | 19 | Daughter | — | North Dakota |
| 21 | Frances A Delling | 15 | Daughter | — | North Dakota |
| 22 | John M Delling | 11 | Son | — | North Dakota |
| 23 | Sam Tollefson | 52 | Head | Manager | Minnesota |
| 24 | Caroline Tollefson | 48 | Wife | — | Wisconsin |
| 25 | Carl Q Tollefson | 21 | Son | Labor | North Dakota |
| 26 | Gordon Tollefson | 19 | Son | Labor | North Dakota |
| 27 | Hulbert Tollefson | 18 | Son | Labor | North Dakota |
| 28 | Bernice Tollefson | 16 | Daughter | — | North Dakota |
| 29 | Gladys Tollefson | 11 | Daughter | — | North Dakota |
| 30 | Andrew Welo | 59 | Head | General Farm | Norway |
| 31 | Tone Welo | 49 | Wife | — | Norway |
| 32 | Minnie Welo | 25 | Daughter | Saleslady | North Dakota |
| 33 | Annie Whitter | 26 | Boarder | Instructor | Iowa |
| 34 | Nell Milling | 24 | Boarder | Instructor | Minnesota |
| 35 | Axel S Hyde | 31 | Boarder | Professor | North Dakota |
| 36 | Martin Shero | 24 | Head | Farm Labor | North Dakota |
| 37 | Rowena Shero | 19 | Wife | — | North Dakota |
| 38 | Dorothy Shero | 3 | Daughter | — | North Dakota |
| 39 | Thomas Shero | 1 | Son | — | North Dakota |
| 40 | Kenneth Shero | 0 | Son | — | North Dakota |
| 41 | Herman Hoppeng | 47 | Head | Salesman | Norway |
| 42 | Nellie Hoppeng | 30 | Wife | — | Norway |
| 43 | Eva Hoppeng | 6 | Daughter | — | North Dakota |
| 44 | Olga Hoppeng | 5 | Daughter | — | North Dakota |
| 45 | Margit Hoppeng | 3 | Daughter | — | North Dakota |
| 46 | Hans Christianson | 60 | Head | Marshall | Iceland |
| 47 | Christianson | 58 | Wife | — | Iceland |
| 48 | John K Johnson | 41 | Head | Section Foreman | Norway |
| 49 | Stina Johnson | 39 | Wife | — | North Dakota |
| 50 | Caroline Johnson | 17 | Daughter | — | North Dakota |
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)