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Mary Mccann — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Union, Iowa
Our Model Tree links this Mary Mccann across the 1930 and 1940 US Censuses in Union, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 7-person household.
Age 13
b. ~1917
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Union, Iowa |
| Surname | McCann |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Age at First Marriage | 13 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Lincoln Township |
| Est. Birth Year | ~1917 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Mccann | Spouse | — | 36 | ~1894 |
| John Mccann | Son | — | 3 | ~1927 |
| Margaret Mccann | Daughter | — | 7 | ~1923 |
| Mary Mccann | Daughter | — | 13 | ~1917 |
| Peter Mccann | Head | — | 37 | ~1893 |
| Lu Mccann | Daughter | — | 11 | ~1919 |
| Robert Mccann | Son | — | 8 | ~1922 |
Census Appearances
1930
Union, Iowa
Daughter, age 13
Union, Iowa · implied b. ~1917 — 7 household members
| Surname | McCann |
| Given Name | Mary C. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Age at First Marriage | 13 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Union-County, Iowa
Daughter, age 23
Union-County, Iowa · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCunn |
| Given Name | Mary C. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Spaulding Twp. |
| Occupation | Rural teacher |
| Industry | public school |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 540 |
| Highest Grade | C 2 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mccann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mccann
Daughter · 1930 · age 13 · b. ~1917 · Iowa
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Sibling
Margaret Mccann
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mccann
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lu Mccann
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mccann
Sibling · 1930 · age 8
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 — Union, Iowa
Open full size
1930 US Federal Census — Union, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel684:0415)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carl L. M. | 8 | Son | — | Iowa |
| 2 | Harold L. | 6 | Son | — | Iowa |
| 3 | Dorothy M. | 2 | Daughter | — | Iowa |
| 4 | Gunnar P. Sandstrom | 28 | Nephew | Farmer | Sweden |
| 5 | James R. Lamb | 67 | Head | Farmer | Iowa |
| 6 | Jennie Lamb | 52 | Wife | — | Iowa |
| 7 | Elizabeth Mae Lamb | 16 | Daughter | — | Iowa |
| 8 | William Sisk | 62 | Head | Farmer | Wisconsin |
| 9 | Sarah Sisk | 57 | Wife | — | Ohio |
| 10 | Louis J. Sisk | 34 | Son | Laborer | Iowa |
| 11 | Thomas E. Sisk | 31 | Son | Laborer | Iowa |
| 12 | Marguerite Sisk | 25 | Daughter | Servant | Iowa |
| 13 | Kathrine Sisk | 21 | Daughter | Teacher | Iowa |
| 14 | Mabel Sisk | 18 | Daughter | — | Iowa |
| 15 | James C. Sayler | 52 | Head | Farmer | Iowa |
| 16 | Myrtle B. Sayler | 49 | Wife | — | Iowa |
| 17 | Benjamin F. Ford | 75 | Father-in-law | — | Iowa |
| 18 | Carl A. Gridley | 23 | Head | Farmer | Iowa |
| 19 | Daisy H. Gridley | 22 | Wife | — | Iowa |
| 20 | Frank J. Bender | 53 | Head | Farmer | Illinois |
| 21 | Ivan C. Bender | 28 | Son | Laborer | Iowa |
| 22 | Gladys J. Bender | 18 | Daughter | — | Iowa |
| 23 | Dorothy L. Bender | 14 | Daughter | — | Iowa |
| 24 | Peter E. Mccann | 37 | Head | Farmer | Iowa |
| 25 | Catherine Mccann | 36 | Wife | — | Iowa |
| 26 | Mary C. Mccann THIS PERSON | 13 | Daughter | — | Iowa |
| 27 | Lu Ellen T. Mccann | 11 | Daughter | — | Iowa |
| 28 | Robert E. Mccann | 8 | Son | — | Iowa |
| 29 | Margaret E. Mccann | 7 | Daughter | — | Iowa |
| 30 | John P. Mccann | 3 | Son | — | Iowa |
| 31 | Joseph E. Hawks | 31 | Head | Farmer | Iowa |
| 32 | Julia M. Hawks | 66 | Mother | — | Iowa |
| 33 | Julia M. Hawks | 32 | Sister | — | Iowa |
| 34 | John E. Bridgeman | 38 | Lodger | Laborer | Iowa |
| 35 | Edwin W. Sheridan | 40 | Head | Farmer | Iowa |
| 36 | Madge T. Sheridan | 44 | Wife | — | Iowa |
| 37 | Ellen J. Sheridan | 4 | Daughter | — | Iowa |
| 38 | James J. Mccann | 27 | Brother-in-law | Laborer | Iowa |
| 39 | John J. Lilly | 31 | Head | Farmer | Iowa |
| 40 | Thelma M. Lilly | 25 | Wife | — | Iowa |
| 41 | Mae Gertrude N. Lilly | 9 | Daughter | — | Iowa |
| 42 | Robert Jr. Lilly | 4 | Son | — | Iowa |
| 43 | John B. Abbott | 44 | Head | Farmer | Iowa |
| 44 | Sarah A. Abbott | 41 | Wife | — | Iowa |
| 45 | Thelma B. Abbott | 19 | Daughter | — | Iowa |
| 46 | Hugh F. Abbott | 17 | Son | Laborer | Iowa |
| 47 | Vella M. Abbott | 16 | Daughter | — | Iowa |
| 48 | Dorotha E. Abbott | 15 | Daughter | — | Iowa |
| 49 | Roland J. Abbott | 13 | Son | — | Iowa |
| 50 | Lucile A. Abbott | 10 | Daughter | — | Iowa |
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)