CP
Clarence Peterson — 1910 US Census Record
Model Tree available1910 United States Federal Census · Cook, Illinois
Our Model Tree links this Clarence Peterson across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Mortz & Mary — first a son (b.~1908), then head of a 9-person household.
Age 2
b. ~1908
Male
Son
Born: Illinois
Single
1910 Census Record Details
| Census Year | 1910 |
| Location | Cook, Illinois |
| Surname | Peterson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1908 |
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.
9 people recorded at the same address in the 1910 census.
| Name | Relation to head | Relative to Clarence | Age | Birth yr |
|---|---|---|---|---|
| Clarence Peterson | Son | — | 2 | ~1908 |
| Alfred Peterson | Son | — | 16 | ~1894 |
| Agnes Peterson | Son | — | 14 | ~1896 |
| Anna Peterson | Daughter | — | 5 | ~1905 |
| Carl Peterson | Son | — | 12 | ~1898 |
| Lawrence Peterson | Son | — | 8 | ~1902 |
| Julia Peterson | Daughter | — | 10 | ~1900 |
| Mortz Peterson | Head | — | 45 | ~1865 |
| Mary Peterson | Spouse | — | 40 | ~1870 |
Census Appearances
1910
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1908 — 9 household members
| Surname | Peterson |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Clarence M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Electrician |
| Industry | Club |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Clarence Peterson across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Mortz Peterson (~0.92 confidence) and mother Mary Peterson (~0.92 confidence) and father Martin Petersen (~0.92 confidence) and father Stephen Petersen (~0.92 confidence) and mother Anna Petersen (~0.92 confidence) and mother Anna Petersen (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Mortz Peterson
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Peterson
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Martin Petersen
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Stephen Petersen
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Anna Petersen
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Anna Petersen
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Peterson
Son · 1910 · age 2 · b. ~1908 · Illinois
★ You are viewing this record
Sibling
Agnes Peterson
Sibling · 1910 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Peterson
Sibling · 1910 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Peterson
Sibling · 1910 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Peterson
Sibling · 1910 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Peterson
Sibling · 1910 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Julia Peterson
Sibling · 1910 · age 10
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
1910 US Federal Census — Cook, Illinois
Open full size
1910 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1910:13thcensus1910po270unit:0379)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Sophie Kopowicz | 38 | Wife | — | Illinois |
| 52 | John Kopowicz | 17 | Son | — | Illinois |
| 53 | Helen Kopowicz | 15 | Daughter | — | Illinois |
| 54 | Henry Kopowicz | 7 | Son | — | Illinois |
| 55 | August Minuski | 35 | Head | — | Germany |
| 56 | Francis Minuski | 31 | Wife | None | Germany |
| 57 | George Minuski | 11 | Son | — | Illinois |
| 58 | August Minuski | 7 | Son | — | Illinois |
| 59 | Frank Minuski | 4 | Son | — | Illinois |
| 60 | Eddy Minuski | 1 | Son | — | Illinois |
| 61 | Dan Sparch | 43 | Head | — | Denmark |
| 62 | Mary Sparch | 35 | Wife | None | Denmark |
| 63 | William Sparch | 6 | Son | — | Illinois |
| 64 | Lucy Sparch | 4 | Daughter | — | Illinois |
| 65 | John Sparch | 1 | Son | — | Illinois |
| 66 | Balthasar Kibb | 48 | Head | — | Germany |
| 67 | Monika Kibb | 45 | Wife | None | Germany |
| 68 | Mortz Peterson | 45 | Head | — | Denmark |
| 69 | Mary Peterson | 40 | Wife | None | Denmark |
| 70 | Alfred Peterson | 16 | Son | — | Nebraska |
| 71 | Agnes Peterson | 14 | Son | — | Illinois |
| 72 | Carl Peterson | 12 | Son | — | Illinois |
| 73 | Julia Peterson | 10 | Daughter | — | Illinois |
| 74 | Lawrence Peterson | 8 | Son | — | Illinois |
| 75 | Anna Peterson | 5 | Daughter | — | Illinois |
| 76 | Clarence Peterson THIS PERSON | 2 | Son | — | Illinois |
| 77 | John Nowczynski | 48 | Head | — | Ger. |
| 78 | Lizzie Nowczynski | 46 | Wife | None | Ger. |
| 79 | Patrick Nowczynski | 22 | Son | — | Illinois |
| 80 | Harry Nowczynski | 15 | Son | — | Illinois |
| 81 | Albert Weinberg | 24 | Head | — | Illinois |
| 82 | Lizzie Weinberg | 24 | Wife | None | Illinois |
| 83 | Edward Meigard | 41 | Head | — | Norway |
| 84 | Annette Meigard | 42 | Wife | None | Norway |
| 85 | Carl Meigard | 19 | Son | — | Norway |
| 86 | Sven Meigard | 17 | Son | — | Norway |
| 87 | Hans Meigard | 14 | Son | None | Norway |
| 88 | Arthur Meigard | 13 | Son | None | Norway |
| 89 | Lazarus Meigard | 11 | Son | None | Norway |
| 90 | Gunnar Meigard | 9 | Son | None | Norway |
| 91 | Lawrence Meigard | 6 | Son | None | Illinois |
| 92 | Edward Meigard | 4 | Son | None | Illinois |
| 93 | Harry Brown | 41 | Head | — | England |
| 94 | Anna B. Brown | 21 | Wife | None | Indiana |
| 95 | John Kozkewicz | 35 | Head | — | Russ. Pol. |
| 96 | Martha Kozkewicz | 32 | Wife | None | Russ. Pol. |
| 97 | Irene Kozkewicz | 6 | Daughter | — | Illinois |
| 98 | Henry Dolenberg | 16 | Boarder | — | Russ. Pol. |
| 99 | Frank Joaquif | 31 | Head | — | Ger. |
| 100 | Anna Joaquif | 27 | Wife | None | Illinois |
Pedigree Summary
Clarence + 6 siblings
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 1910 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)