MK
Mary Kuhn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this Mary Kuhn across the 1920, 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 5-person household.
Age 50
b. ~1890
Female
Spouse
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Kuhn |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Hauvers District |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Income (1939) | 60 |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Hauvers District |
| Est. Birth Year | ~1890 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Betty Kuhn | Daughter | — | 13 | ~1927 |
| Charles Kuhn | Head | — | 56 | ~1884 |
| Mary Kuhn | Spouse | — | 50 | ~1890 |
| Emma Kuhn | Daughter | — | 11 | ~1929 |
| Eugene Kuhn | Son | — | 16 | ~1924 |
Census Appearances
1920
Frederick, Maryland
Spouse, age 30
Frederick, Maryland · implied b. ~1890 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kuhn |
| Given Name | Mary J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Frederick, Maryland
Other, age 40
Frederick, Maryland · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kuhn |
| Given Name | Mary A |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 17 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Spouse, age 50
Frederick-County, Maryland · implied b. ~1890 — 5 household members
| Surname | Kuhn |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Hauvers District |
| 1935 Residence (County) | Frederick |
| Income (1939) | 60 |
| Highest Grade | No 3 |
| 1935 Residence | Same house |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Kuhn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Kuhn
Spouse · 1940 · age 50 · b. ~1890 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01549-00138)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy Lewis | 46 | head | Laborer | Maryland |
| 42 | Maggie B. Lewis | 47 | wife | — | Maryland |
| 43 | Margaret Ann Kuhn | 0 | ward | — | Maryland |
| 44 | Charles Kuhn | 56 | head | Laborer | Maryland |
| 45 | Mary Kuhn THIS PERSON | 50 | wife | — | Maryland |
| 46 | Eugene Kuhn | 16 | son | Laborer | Maryland |
| 47 | Betty Kuhn | 13 | daughter | — | Maryland |
| 48 | Emma May Kuhn | 11 | daughter | — | Maryland |
| 49 | Reuben Mcafee | 79 | head | — | Maryland |
| 50 | Rosa Mcafee | 45 | daughter | — | Maryland |
| 51 | William Mcafee | 19 | nephew | Helper | Maryland |
| 52 | Robert H. Mcafee | 28 | head | Farmer | Maryland |
| 53 | Nora Mcafee | 31 | wife | — | Maryland |
| 54 | Robert Mcafee | 5 | son | — | Maryland |
| 55 | James Mcafee | 4 | son | — | Maryland |
| 56 | Hampton Wolfe | 60 | head | Carpenter | Maryland |
| 57 | Sadie Wolfe | 40 | wife | — | Maryland |
| 58 | Hiram Wolfe | 18 | son | Laborer | Maryland |
| 59 | Agnes Wolfe | 15 | daughter | — | Maryland |
| 60 | Betty Wolfe | 13 | daughter | — | Maryland |
| 61 | George Wolfe | 11 | son | — | Maryland |
| 62 | Elaine Wolfe | 7 | daughter | — | Maryland |
| 63 | Mary Willard | 20 | daughter | — | Maryland |
| 64 | Leah Willard | 1 | granddaughter | — | Maryland |
| 65 | Howard Lantz | 59 | lodger | Laborer | Maryland |
| 66 | Frank H. Kuhn | 51 | head | Fireman | Maryland |
| 67 | Rena Kuhn | 42 | wife | — | Maryland |
| 68 | Arlene Kuhn | 18 | daughter | — | Maryland |
| 69 | Richard Kuhn | 16 | son | — | Maryland |
| 70 | Faye Kuhn | 14 | daughter | — | Maryland |
| 71 | Jack Kuhn | 12 | son | — | Maryland |
| 72 | Jane Kuhn | 8 | daughter | — | Maryland |
| 73 | Bonnie Kuhn | 0 | daughter | — | Maryland |
| 74 | Harry M. Swope | 21 | head | Laborer | Maryland |
| 75 | Margaret Swope | 21 | wife | — | Maryland |
| 76 | Ronald H. Swope | 2 | son | — | Maryland |
| 77 | Harry E. Swope | 1 | son | — | Maryland |
| 78 | Archie M. Buhrman | 31 | head | Farmer | Maryland |
| 79 | Charlotte Buhrman | 26 | wife | — | Maryland |
| 80 | Lorraine Buhrman | 9 | daughter | — | Maryland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)