JM
John Mccarthy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this John Mccarthy across the 1910, 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | McCarthy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Salesman |
| Industry | Life Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Salesman |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1900 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Joan Mccarthy | Daughter | — | 8 | ~1932 |
| John Mccarthy | Head | — | 40 | ~1900 |
| Isabelle Mccarthy | Spouse | — | 31 | ~1909 |
Census Appearances
1910
Ramsey, Minnesota
Son, age 10
Ramsey, Minnesota · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Ramsey, Minnesota
Son, age 19
Ramsey, Minnesota · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Minnesota |
| Occupation | Contractor |
| Industry | Gen'l Electric |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 30
Ramsey, Minnesota · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Head, age 40
Ramsey-County, Minnesota · implied b. ~1900 — 3 household members
| Surname | McCarthy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul City |
| 1935 Residence (County) | Ramsey |
| Occupation | Salesman |
| Industry | Life Insurance |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 John Mccarthy across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mccarthy (~0.92 confidence) and father John Mccarthy (~0.92 confidence) and father John Mccarthy (~0.92 confidence) and mother Olive Mccarthy (~0.92 confidence) and mother Alice Mccarthy (~0.92 confidence) and mother Alice Mccarthy (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mccarthy
b. ~1860
Source father
● Household
· direct · ~0.92
Father
John Mccarthy
b. ~1863
Source father
● Household
· direct · ~0.92
Father
John Mccarthy
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Olive Mccarthy
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Alice Mccarthy
b. ~1866
Source mother
● Household
· direct · ~0.92
Mother
Alice Mccarthy
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mccarthy
Head · 1940 · age 40 · b. ~1900 · Minnesota
★ 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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02002-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sarah Johnston | 76 | Wife | — | Minnesota |
| 42 | Devin B. Loran | 29 | Head | Typist | Wisconsin |
| 43 | Marie Loran | 33 | Lodger | Teacher | Kansas |
| 44 | Pearl O. Lanoorp | 48 | Head | Maid | New York |
| 45 | Vivian N. Lanoorp | 21 | Daughter | Elevator Operator | North Dakota |
| 46 | Margaret Spaulding | 57 | Head | — | Minnesota |
| 47 | Marie Spaulding | 25 | Daughter | Supervisor | Minnesota |
| 48 | Margaret Bartels | 50 | Mother | Chocolate Dipper | Minnesota |
| 49 | Margaret Bartels | 26 | Daughter | Clerk | Minnesota |
| 50 | Elizabeth Pratt | 73 | Mother in law | — | Germany |
| 51 | Arthur Giertsen | 20 | Head | Laborer | Minnesota |
| 52 | Bernice Giertsen | 22 | Wife | — | Minnesota |
| 53 | Joseph Mayer | 61 | Head | Maintenance | New York |
| 54 | Bessie Mayer | 50 | Wife | — | Minnesota |
| 55 | Francis Mayer | 26 | Son | Machine Operator | Minnesota |
| 56 | Gudor G. Mouch | 73 | Father in law | — | Norway |
| 57 | Alfred Plante | 34 | Head | Manager | North Dakota |
| 58 | Snel Plante | 31 | Wife | — | Minnesota |
| 59 | Nannette Plante | 9 | Daughter | — | Minnesota |
| 60 | Joan Plante | 8 | Daughter | — | Minnesota |
| 61 | Marvel Kaldahl | 38 | Head | Sheet Metal Worker | Wisconsin |
| 62 | Lillian Kaldahl | 35 | Wife | — | Minnesota |
| 63 | Joan Kaldahl | 2 | Daughter | — | Minnesota |
| 64 | Swan O. Monson | 41 | Head | Carpenter | Sweden |
| 65 | Anne Monson | 49 | Wife | — | Sweden |
| 66 | Thor Eklund | 22 | Son | — | Illinois |
| 67 | June Eklund | 24 | Daughter | Sec. | Illinois |
| 68 | Donald R. Henkel | 20 | Head | General Clerical Work | Minnesota |
| 69 | Jane Henkel | 20 | Wife | — | Minnesota |
| 70 | Clara Robertson | 67 | Head | — | Minnesota |
| 71 | Ruth Robertson | 37 | Daughter | General Clerical Work | Minnesota |
| 72 | Edward Siercks | 24 | Head | Truck Driver | Minnesota |
| 73 | Virginia Siercks | 22 | Wife | — | North Dakota |
| 74 | John Klatt | 43 | Head | Salesman | Minnesota |
| 75 | Marcella Klatt | 42 | Wife | — | Minnesota |
| 76 | Fred Rascher | 68 | Head | — | Germany |
| 77 | John Mccarthy THIS PERSON | 40 | Head | Salesman | Minnesota |
| 78 | Isabelle Mccarthy | 31 | Wife | Steno | Minnesota |
| 79 | Joan Mccarthy | 8 | Daughter | — | Illinois |
Pedigree Summary
John
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)