JD
James Donnelly — 1930 US Census Record
Model Tree available1930 United States Federal Census · Sacramento, California
Our Model Tree links this James Donnelly across the 1910, 1920 and 1930 US Censuses in Sacramento, California (XGBoost, ~Confirmed), with identified parents Peter & Mary — first a son (b.~1908), then head of a 3-person household.
Age 22
b. ~1908
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Sacramento, California |
| Surname | Donnelly |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Electrician |
| Industry | Dredge Mining |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Electrician |
| Township / Ward | Folsom City |
| 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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Donnelly | Son | — | 22 | ~1908 |
| Blanche Oliver | Other | — | 26 | ~1904 |
| Mary Donnelly | Head | — | 52 | ~1878 |
Census Appearances
1910
Sacramento, California
Son, age 2
Sacramento, California · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Sacramento, California
Son, age 12
Sacramento, California · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | James J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Sacramento, California
Son, age 22
Sacramento, California · implied b. ~1908 — 3 household members
| Surname | Donnelly |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Iowa |
| Occupation | Electrician |
| Industry | Dredge Mining |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 James Donnelly across 3 US Census years (1910, 1920 and 1930) in Sacramento, California, using XGBoost record linkage. Identified parents: father Peter Donnelly (~0.92 confidence) and mother Mary Donnelly (~0.92 confidence) and mother Mary Donnelly (~0.92 confidence) and mother Mollie Donnelly (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Donnelly
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mary Donnelly
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Mary Donnelly
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Mollie Donnelly
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Donnelly
Son · 1930 · age 22 · b. ~1908 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Sacramento, California
Open full size
1930 US Federal Census — Sacramento, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel185:0372)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edward Kopp | 58 | Head | Supt. Gold Dredging | California |
| 52 | Elizabeth Kopp | 52 | Wife | — | California |
| 53 | Kenneth L Kopp | 9 | Son | — | California |
| 54 | Charles L Martin | 22 | Son-in-law | Mechanic | Missouri |
| 55 | Sama Martin | 21 | Daughter | — | California |
| 56 | William E Trager | 34 | Head | Repair Man | Kansas |
| 57 | Emily E Trager | 31 | Wife | — | Maine |
| 58 | Lewis M Dunborn | 32 | Head | Physician | California |
| 59 | Alice Dunborn | 31 | Wife | — | California |
| 60 | Virginia Dunborn | 2 | Daughter | — | California |
| 61 | Marion Egloff | 71 | Head | — | Iowa |
| 62 | Don B Egloff | 43 | Son | — | Illinois |
| 63 | Ernest Egloff | 41 | Son | Electrician | California |
| 64 | Elsie Mcdonald | 38 | Head | — | California |
| 65 | Mercedes E Mcdonald | 14 | Daughter | — | California |
| 66 | Roy Effie Mcdonald | 12 | Son | — | California |
| 67 | Mary F Mcfarlane | 69 | Head | — | Illinois |
| 68 | Hazel M Mcfarlane | 45 | Daughter | Postmistress | California |
| 69 | Ruth Mcfarlane | 21 | Granddaughter | Stenographer | California |
| 70 | Margaret Mcfarlane | 18 | Granddaughter | — | California |
| 71 | Charles G Mcfarlane | 16 | Grandson | — | California |
| 72 | John Russe | 45 | Head | Farmer | California |
| 73 | Vida U Russe | 41 | Wife | — | California |
| 74 | Joyce N Russe | 11 | Daughter | — | California |
| 75 | Jack H Russe | 8 | Son | — | California |
| 76 | Mary C H Donnelly | 52 | Head | — | Iowa |
| 77 | James H Donnelly THIS PERSON | 22 | Son | Electrician | California |
| 78 | Blanche Oliver | 26 | Lodger | Teacher | California |
| 79 | Tony Terrara | 35 | Head | Laborer | Portugal |
| 80 | Phoebe Terrara | 37 | Wife | — | Portugal |
| 81 | Mary Terrara | 8 | Daughter | — | California |
| 82 | Joseph Terrara | 6 | Son | — | California |
| 83 | Bryan Ron | 24 | Head | Guard | Pennsylvania |
| 84 | Alice Ron | 23 | Wife | — | California |
| 85 | William Triplow | 74 | Head | — | Ohio |
| 86 | Lydia Triplow | 71 | Wife | — | Canada English |
| 87 | John F Leonard | 31 | Head | Manager | California |
| 88 | Hazel Leonard | 39 | Wife | — | California |
| 89 | Mary J Leonard | 6 | Daughter | — | California |
| 90 | John J Leonard | 5 | Son | — | California |
| 91 | Margaret Leonard | 2 | Daughter | — | California |
| 92 | Philip Long | 59 | Lodger | Laborer | France |
| 93 | Annie Cade | 64 | Head | — | California |
| 94 | Elizabeth S Fleming | 26 | Lodger | Yes | South Dakota |
| 95 | Alice Moore | 37 | Lodger | Teacher | California |
| 96 | Alice Weston | 46 | Head | Waitress | California |
| 97 | George Pringle | 52 | Lodger | Engineer | Maine |
| 98 | Robert Ferguson | 53 | Head | Station Engineer | Ohio |
| 99 | Anna J Ferguson | 50 | Wife | — | California |
| 100 | John J Solberg | 38 | Head | Guard | Denmark |
Pedigree Summary
James
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)