JC
John Crowley — 1930 US Census Record
Model Tree available1930 United States Federal Census · Mercer, North Dakota
Our Model Tree links this John Crowley across the 1900, 1910, 1920 and 1930 US Censuses in Mercer, North Dakota (XGBoost, ~Confirmed), with identified parents Isabella & Johannah — first a head (b.~1882), then head of a 8-person household.
Age 48
b. ~1882
Male
Head
Born: Minnesota
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Mercer, North Dakota |
| Surname | Crowley |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 31 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Farmer |
| Township / Ward | Township 142 Range 90 |
| Est. Birth Year | ~1882 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Frank Crowley | Son | — | 11 | ~1919 |
| Margaret Crowley | Daughter | — | 13 | ~1917 |
| James Crowley | Son | — | 8 | ~1922 |
| Robert Crowley | Son | — | 16 | ~1914 |
| John Crowley | Head | — | 48 | ~1882 |
| Florence Crowley | Daughter | — | 6 | ~1924 |
| Allen Crowley | Son | — | 10 | ~1920 |
| Ruby Crowley | Spouse | — | 40 | ~1890 |
Census Appearances
1900
Mercer, North …
Son, age 19
Mercer, North Dakota · implied b. ~1881 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crowley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Birth Month | Apr |
| Birth Year | 1881 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1910
Mercer, North …
Son, age 28
Mercer, North Dakota · implied b. ~1882 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crowley |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | Farm |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Mercer, North …
Head, age 38
Mercer, North Dakota · implied b. ~1882 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crowley |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | Stock farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Mercer, North …
Head, age 48
Mercer, North Dakota · implied b. ~1882 — 8 household members
| Surname | Crowley |
| Given Name | John P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 31 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| 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 Crowley across 4 US Census years (1900, 1910, 1920 and 1930) in Mercer, North Dakota, using XGBoost record linkage. Identified parents: mother Isabella Crowley (~0.92 confidence) and mother Johannah Crowley (~0.92 confidence) and father James Crowley (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Isabella Crowley
b. ~1840
Source mother
● Household
· direct · ~0.92
Mother
Johannah Crowley
b. ~1840
Source mother
● Household
· direct · ~0.92
Father
James Crowley
b. ~1841
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Crowley
Head · 1930 · age 48 · b. ~1882 · North Dakota
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Mercer, North Dakota
Open full size
1930 US Federal Census — Mercer, North Dakota
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1738unit:0371)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred W. Jaeger | 36 | Head | Farmer | North Dakota |
| 2 | Lina S. Jaeger | 31 | Wife | — | North Dakota |
| 3 | Adolf F. Jaeger | 12 | Son | — | North Dakota |
| 4 | Robert H. Jaeger | 11 | Son | — | North Dakota |
| 5 | Gertrude F. Jaeger | 8 | Daughter | — | North Dakota |
| 6 | William J. Jaeger | 4 | Son | — | North Dakota |
| 7 | Lillian E. Jaeger | 1 | Daughter | — | North Dakota |
| 8 | Stanley Long | 23 | Boarder | Farm Laborer | Pennsylvania |
| 9 | Fred Merton | 53 | Head | 1909 | Russia |
| 10 | Sofia Merton | 56 | Wife | 1909 | Russia |
| 11 | Henry Merton | 23 | Son | 1908 | Russia |
| 12 | Emelia Merton | 20 | Daughter | 1909 | Russia |
| 13 | Martha Merton | 18 | Daughter | — | North Dakota |
| 14 | Albert Merton | 16 | Son | — | North Dakota |
| 15 | John J. Schnaidt | 39 | Head | 1906 | Ukraine Russia |
| 16 | Rose Schnaidt | 34 | Wife | 1909 | Ukraine Russia |
| 17 | Paul Schnaidt | 14 | Son | — | North Dakota |
| 18 | Charles W. Schnaidt | 13 | Son | — | North Dakota |
| 19 | Adolf J. Schnaidt | 12 | Son | — | North Dakota |
| 20 | Walter J. Schnaidt | 8 | Son | — | North Dakota |
| 21 | Lillian B. Schnaidt | 6 | Daughter | — | North Dakota |
| 22 | Helen G. Schnaidt | 1 | Daughter | — | North Dakota |
| 23 | Lawrence Volz | 20 | Servant | Farm Laborer | North Dakota |
| 24 | Ludwig Reiser | 47 | Head | 1907 | Russia |
| 25 | Christina Reiser | 45 | Wife | 1908 | Russia |
| 26 | Mathilda Reiser | 21 | Daughter | 1908 | Russia |
| 27 | Ottilia E. Reiser | 19 | Daughter | — | North Dakota |
| 28 | Pauline A. B. Reiser | 18 | Daughter | — | North Dakota |
| 29 | Elsie Reiser | 16 | Daughter | — | North Dakota |
| 30 | Louisa C. Reiser | 15 | Daughter | — | North Dakota |
| 31 | Edwin Reiser | 13 | Son | — | North Dakota |
| 32 | Anna Reiser | 10 | Daughter | — | North Dakota |
| 33 | Clara Reiser | 7 | Daughter | — | North Dakota |
| 34 | Doris Bacon | 25 | Daughter | Teacher | Wisconsin |
| 35 | John Martin | 28 | Head | 1909 | Russia |
| 36 | Elsie D. Martin | 21 | Wife | — | North Dakota |
| 37 | Mildred W. Martin | 2 | Daughter | — | North Dakota |
| 38 | Walter V. Martin | 1 | Son | — | North Dakota |
| 39 | Jacob Hausauer | 57 | Head | 1906 | Russia |
| 40 | Maria Hausauer | 52 | Wife | 1906 | Russia |
| 41 | Peter Hausauer | 20 | Son | — | North Dakota |
| 42 | Emma Hausauer | 18 | Daughter | — | North Dakota |
| 43 | John P. Crowley THIS PERSON | 48 | Head | Farmer | Minnesota |
| 44 | Ruby M. Crowley | 40 | Wife | — | Michigan |
| 45 | Robert J. A. B. Crowley | 16 | Son | — | North Dakota |
| 46 | Margaret M. A. B. Crowley | 13 | Daughter | — | Montana |
| 47 | Frank R. Crowley | 11 | Son | — | North Dakota |
| 48 | Allen M. Crowley | 10 | Son | — | North Dakota |
| 49 | James P. Crowley | 8 | Son | — | North Dakota |
| 50 | Florence G. Crowley | 6 | Daughter | — | North Dakota |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)