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Grace Harris — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Marquette, Michigan
Our Model Tree links this Grace Harris across the 1920 and 1930 US Censuses in Marquette, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1914), then head of a 8-person household.
Age 16
b. ~1914
Female
Daughter
Born: Michigan
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Marquette, Michigan |
| Surname | Harris |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | England |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Ishpeming City |
| Est. Birth Year | ~1914 |
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 Grace | Age | Birth yr |
|---|---|---|---|---|
| John Harris | Son | — | 12 | ~1918 |
| Grace Harris | Daughter | — | 16 | ~1914 |
| Leslie Harris | Son | — | 8 | ~1922 |
| Mary Harris | Daughter | — | 10 | ~1920 |
| Robert Harris | Son | — | 14 | ~1916 |
| Annie Harris | Spouse | — | 42 | ~1888 |
| Henry Harris | Son | — | 18 | ~1912 |
| George Harris | Head | — | 54 | ~1876 |
Census Appearances
1920
Marquette, Michigan
Daughter, age 6
Marquette, Michigan · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Grace E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Marquette, Michigan
Daughter, age 16
Marquette, Michigan · implied b. ~1914 — 8 household members
| Surname | Harris |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | England |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Grace Harris across 2 US Census years (1920 and 1930) in Marquette, Michigan, using XGBoost record linkage.
Show:
This person
Anchor record
Grace Harris
Daughter · 1930 · age 16 · b. ~1914 · Michigan
★ You are viewing this record
Sibling
Leslie Harris
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Harris
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Harris
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Harris
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Harris
Sibling · 1930 · age 12
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 — Marquette, Michigan
Open full size
1930 US Federal Census — Marquette, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1010:0197)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jacob Koski | 36 | Head | Miner | Finland |
| 2 | Lempi Koski | 29 | Wife | — | Finland |
| 3 | Harold Koski | 8 | Son | — | Michigan |
| 4 | Uno Hannula | 21 | Boarder | Farmer | Michigan |
| 5 | William Koski | 16 | Nephew | — | Michigan |
| 6 | Oscar W. Karsio | 53 | Head | Miner | Sweden |
| 7 | Justina Karsio | 53 | Wife | — | Sweden |
| 8 | S. William Karsio | 22 | Son | Maintenance Dept. | Michigan |
| 9 | E. Folke Karsio | 19 | Son | Section | Michigan |
| 10 | Oscar H. Karsio | 15 | Son | — | Michigan |
| 11 | Carl H. Karsio | 12 | Son | — | Michigan |
| 12 | Ralph A. Karsio | 10 | Son | — | Michigan |
| 13 | Jennie Huhtala | 28 | Daughter | — | Sweden |
| 14 | Ralph E. Huhtala | 10 | Grandson | — | Michigan |
| 15 | Helen M. Huhtala | 7 | Granddaughter | — | Michigan |
| 16 | William E. Huhtala | 6 | Grandson | — | Michigan |
| 17 | Oscar E. Strand | 38 | Head | General Yardmaster | Norway |
| 18 | Mathilda Strand | 35 | Wife | — | Michigan |
| 19 | Peter A. Patron | 62 | Head | Dairyman | Sweden |
| 20 | Hilda Patron | 57 | Wife | — | Sweden |
| 21 | Theodore Patron | 27 | Son | Tire Builder | Michigan |
| 22 | Harold J. Simmons | 30 | Head | Salesman | Michigan |
| 23 | Helen Simmons | 31 | Wife | — | Michigan |
| 24 | William J. Miners | 44 | Head | Stamp Clerk | Michigan |
| 25 | Clara Miners | 43 | Wife | — | Michigan |
| 26 | Bernice D. Miners | 19 | Daughter | Stenographer | Michigan |
| 27 | Brynhild Dice | 71 | Head | — | Norway |
| 28 | John Lemire | 54 | Head | Machinist | England |
| 29 | Selma Lemire | 55 | Wife | — | Michigan |
| 30 | Carl F. Lemire | 30 | Son | Diamond Drill Runner | Michigan |
| 31 | George Harris | 54 | Head | Helper | England |
| 32 | Annie Harris | 42 | Wife | — | Michigan |
| 33 | Henry Harris | 18 | Son | — | Michigan |
| 34 | Grace Harris THIS PERSON | 16 | Daughter | — | Michigan |
| 35 | Robert Harris | 14 | Son | — | Michigan |
| 36 | John Harris | 12 | Son | — | Michigan |
| 37 | Mary Harris | 10 | Daughter | — | Michigan |
| 38 | Leslie Harris | 8 | Son | — | Michigan |
| 39 | Alva Swenson | 55 | Head | — | Michigan |
| 40 | John Horens | 49 | Head | Pumpman | Norway |
| 41 | Judith Horens | 43 | Wife | — | Michigan |
| 42 | Viola Horens | 19 | Daughter | Seamer | Michigan |
| 43 | Arnold Horens | 16 | Son | Newsboy | Michigan |
| 44 | Homer Horens | 13 | Son | — | Michigan |
| 45 | Emmett Horens | 11 | Son | Newsboy | Michigan |
| 46 | Melvin Horens | 8 | Son | — | Michigan |
| 47 | Norman Horens | 3 | Son | — | Michigan |
| 48 | George Medlyn | 40 | Head | Trucker | Michigan |
| 49 | Maud Medlyn | 33 | Wife | — | Michigan |
| 50 | Janetta Medlyn | 9 | Daughter | — | Michigan |
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)