MK
Mary Klein — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Klein across the 1910, 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 3-person household.
Age 53
b. ~1877
Female
Spouse
Born: Indiana
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Klein |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 23 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Evanston City |
| Est. Birth Year | ~1877 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Charles Klein | Head | — | 55 | ~1875 |
| Mary Klein | Spouse | — | 53 | ~1877 |
| Karl Klein | Son | — | 18 | ~1912 |
Census Appearances
1910
Cook, Illinois
Spouse, age 33
Cook, Illinois · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Klein |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Indiana |
| Years Married | 9 |
| Children Born | 3 |
| Children Living | 1 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Cook, Illinois
Spouse, age 42
Cook, Illinois · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Klein |
| Given Name | Mary H. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Cook, Illinois
Spouse, age 53
Cook, Illinois · implied b. ~1877 — 3 household members
| Surname | Klein |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 23 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Cook-County, Illinois
Spouse, age 65
Cook-County, Illinois · implied b. ~1875
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Kline |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Klein across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Klein
Spouse · 1930 · age 53 · b. ~1877 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel500:0039)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Grand | 63 | Head | Mgr Editor | Canada English |
| 2 | Amy Grand | 60 | Wife | — | Minnesota |
| 3 | John K Grand | 19 | Son | — | Illinois |
| 4 | Harry Lambert | 35 | Head | Special Agt | Illinois |
| 5 | Hessie Lambert | 35 | Wife | — | Ireland |
| 6 | John Montgomery | 10 | Adopted Son | — | Ireland |
| 7 | Sarah Montgomery | 62 | Mother-in-law | — | Ireland |
| 8 | Kenzie Bird | 40 | Head | Traveler Commercial | Connecticut |
| 9 | Irene Bird | 37 | Wife | — | Connecticut |
| 10 | Robert Bird | 9 | Son | — | Connecticut |
| 11 | Louis G Kostos | 30 | Head | Prop City Calamari | Greece |
| 12 | Ada Kostos | 27 | Wife | — | Oklahoma |
| 13 | Helen A Kostos | 6 | Daughter | — | Oklahoma |
| 14 | — | None | — | — | — |
| 15 | — | None | — | — | — |
| 16 | William Schreiber | 30 | Head | Fireman | Illinois |
| 17 | Esther Schreiber | 33 | Wife | — | Illinois |
| 18 | Virginia Schreiber | 8 | Daughter | — | Illinois |
| 19 | Henry Prendergast | 69 | Head | — | Ireland |
| 20 | Walter Prendergast | 29 | Son | Lawyer | Illinois |
| 21 | Nora Slocum | 49 | Housekeeper | Housekeeper | Michigan |
| 22 | John T Mould | 65 | Head | Painter | England |
| 23 | Agnes Mould | 55 | Wife | — | Ireland |
| 24 | Charles Klein | 55 | Head | Conductor | Germany |
| 25 | Mary Klein THIS PERSON | 53 | Wife | — | Indiana |
| 26 | Karl Klein | 18 | Son | — | Illinois |
| 27 | Bertram Jackson | 22 | Head | Tester | Illinois |
| 28 | Marion Jackson | 18 | Wife | — | Illinois |
| 29 | Carol Jackson | 0 | Daughter | — | Illinois |
| 30 | Asa Thomas | 39 | Head | Captain | Michigan |
| 31 | Emma Thomas | 42 | Wife | — | Michigan |
| 32 | Mary Thomas | 12 | Daughter | — | Illinois |
| 33 | Harold Thomas | 7 | Son | — | Illinois |
| 34 | Richard Franklin | 45 | Head | Contractor Heating | Illinois |
| 35 | Luvern Franklin | 43 | Wife | — | Illinois |
| 36 | Richard Franklin | 14 | Son | — | Washington |
| 37 | Julia Franklin | 12 | Daughter | — | Washington |
| 38 | F. Allen Royce | 57 | Head | Agt Sales | New York |
| 39 | Marie Royce | 58 | Wife | — | New York |
| 40 | Harriet Booth | 74 | Aunt | — | Vermont |
| 41 | Emil Roscher | 55 | Head | Designer | Illinois |
| 42 | Martha Roscher | 55 | Wife | — | Illinois |
| 43 | Phillip Roscher | 28 | Son | Policeman | Illinois |
| 44 | Lorin Patten | 29 | Head | Maintenance | Illinois |
| 45 | Adeline Patten | 40 | Wife | — | Illinois |
| 46 | Adeline Curtis | 15 | Daughter | Maid | Illinois |
| 47 | Elizabeth Curtis | 13 | Daughter | — | Illinois |
| 48 | Eleanor Curtis | 11 | Daughter | — | Illinois |
| 49 | George Curtis | 9 | Son | — | Illinois |
| 50 | Joseph Curtis | 5 | Son | — | Illinois |
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)