WM
William Mcgrath — 1920 US Census Record
Model Tree available1920 United States Federal Census · Ada, Idaho
Our Model Tree links this William Mcgrath across the 1910, 1920 and 1930 US Censuses in Ada, Idaho (XGBoost, ~Confirmed), with identified parents George & Mabel — first a son (b.~1905), then head of a 6-person household.
Age 15
b. ~1905
Male
Son
Born: Idaho
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Ada, Idaho |
| Surname | McGrath |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
| Township / Ward | Green Meadows Precinct |
| Est. Birth Year | ~1905 |
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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Minnie Mcgrath | Spouse | — | 31 | ~1889 |
| Thomas Mcgrath | Other | — | 74 | ~1846 |
| George Mcgrath | Head | — | 37 | ~1883 |
| William Mcgrath | Son | — | 15 | ~1905 |
| Everett Mcgrath | Son | — | 11 | ~1909 |
| Lloyd Mcgrath | Son | — | 13 | ~1907 |
Census Appearances
1910
Ada, Idaho
Son, age 4
Ada, Idaho · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Willard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1920
Ada, Idaho
Son, age 15
Ada, Idaho · implied b. ~1905 — 6 household members
| Surname | McGrath |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Idaho |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
1930
Ada, Idaho
Head, age 25
Ada, Idaho · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Willard H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Idaho |
| Age at First Marriage | 21 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 12000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Idaho |
| Birth Country | United States |
| Birthplace (normalized) | idaho |
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 William Mcgrath across 3 US Census years (1910, 1920 and 1930) in Ada, Idaho, using XGBoost record linkage. Identified parents: father George Mcgrath (~0.92 confidence) and mother Mabel Mcgrath (~0.92 confidence) and mother Minnie Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Mcgrath
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Mabel Mcgrath
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Minnie Mcgrath
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Mcgrath
Son · 1920 · age 15 · b. ~1905 · Idaho
★ You are viewing this record
Sibling
Lloyd Mcgrath
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Everett Mcgrath
Sibling · 1920 · age 11
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
1920 US Federal Census — Ada, Idaho
Open full size
1920 US Federal Census — Ada, Idaho
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu287unit:0539)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ernest L Eggleston | 43 | Head | Manager | Kansas |
| 52 | Minnie A Eggleston | 34 | Wife | — | Illinois |
| 53 | Lula V Eggleston | 14 | Son | — | Idaho |
| 54 | Ethel Eggleston | 12 | Daughter | — | Idaho |
| 55 | Lester Eggleston | 11 | Son | — | Idaho |
| 56 | Evelyn Eggleston | 7 | Daughter | — | Idaho |
| 57 | Neal Jennings | 41 | Head | Farmer | Kansas |
| 58 | May Jennings | 34 | Wife | — | Kansas |
| 59 | Cecil M Jennings | 14 | Daughter | — | Idaho |
| 60 | Edgard Jennings | 13 | Son | — | Idaho |
| 61 | George L Mcgrath | 37 | Head | Farmer | Kansas |
| 62 | Minnie Mcgrath | 31 | Wife | — | Iowa |
| 63 | William Mcgrath THIS PERSON | 15 | Son | — | Idaho |
| 64 | Lloyd Mcgrath | 13 | Son | — | Idaho |
| 65 | Everett Mcgrath | 11 | Son | — | Idaho |
| 66 | Thomas Mcgrath | 74 | Father | — | Ohio |
| 67 | Oliver Shuee | 46 | Head | Laborer | Kansas |
| 68 | Laura Shuee | 40 | Wife | — | Kansas |
| 69 | Virgil Shuee | 17 | Son | — | Oklahoma |
| 70 | Marie Shuee | 16 | Daughter | — | Oklahoma |
| 71 | Orvil Shuee | 6 | Son | — | Idaho |
| 72 | Clarence A Sutton | 47 | Head | Farmer | Michigan |
| 73 | Maud B Sutton | 37 | Wife | — | Idaho |
| 74 | Evelyn Sutton | 16 | Daughter | — | Washington |
| 75 | Mandille Sutton | 14 | Son | — | Idaho |
| 76 | Arla M Sutton | 3 | Daughter | — | Oregon |
| 77 | Ed A Jennings | 34 | Head | Farmer | Kansas |
| 78 | Inez Jennings | 35 | Wife | — | Nebraska |
| 79 | Ourl Jennings | 2 | Son | — | Idaho |
| 80 | Carl E Cluster | 37 | Head | Farmer | Nebraska |
| 81 | Mary K Cluster | 34 | Wife | — | South Dakota |
| 82 | Laura Cluster | 10 | Daughter | — | Idaho |
| 83 | Lyverta Cluster | 9 | Daughter | — | Idaho |
| 84 | Carl Cluster | 7 | Daughter | — | Idaho |
| 85 | Roy D Murphy | 28 | Boarder | Electric Engineer | South Dakota |
| 86 | Andrew J Murphy | 66 | Boarder | Blacksmith | New York |
| 87 | Willard H Frank | 35 | Head | Farmer | Iowa |
| 88 | Alta Frank | 34 | Wife | — | West Virginia |
| 89 | Oul Frank | 16 | Daughter | — | Idaho |
| 90 | G O Hard | 72 | Father in law | Gardener | Ohio |
| 91 | Leonard Layton | 40 | Head | Farmer | Michigan |
| 92 | Martha Layton | 74 | Mother | — | Pennsylvania |
| 93 | John Pierce | 50 | Head | Farmer | Idaho |
| 94 | Bertha Pierce | 46 | Wife | — | Missouri |
| 95 | Gladys Pierce | 21 | Daughter | Teacher | Idaho |
| 96 | Clayton Pierce | 20 | Son | Farm Laborer | Idaho |
| 97 | Iva Pierce | 16 | Daughter | — | Idaho |
| 98 | Leland Pierce | 13 | Son | — | Idaho |
| 99 | Walton Pierce | 10 | Son | — | Idaho |
| 100 | Edwin Gardner | 57 | Head | Farmer | Illinois |
Pedigree Summary
William + 2 siblings
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 1920 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)