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Robert Jacobs — 1930 US Census Record
Model Tree available1930 United States Federal Census · Lehigh, Pennsylvania
Our Model Tree links this Robert Jacobs across the 1920, 1930 and 1940 US Censuses in Lehigh, Pennsylvania (XGBoost, ~Confirmed), with identified parents George & Beulah — first a son (b.~1917), then head of a 4-person household.
Age 13
b. ~1917
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Lehigh, Pennsylvania |
| Surname | Jacobs |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Allentown |
| Est. Birth Year | ~1917 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Jacobs | Son | — | 13 | ~1917 |
| Henry Jacobs | Son | — | 16 | ~1914 |
| Irene Jacobs | Daughter | — | 15 | ~1915 |
| Beulah Jacobs | Head | — | 37 | ~1893 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 3
Allegheny, Pennsylvania · implied b. ~1917 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Lehigh, Pennsylvania
Son, age 13
Lehigh, Pennsylvania · implied b. ~1917 — 4 household members
| Surname | Jacobs |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Head, age 23
Allegheny-County, Pennsylvania · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jacob |
| Given Name | Robert C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Sorter |
| Industry | Kitchen Ware Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Robert Jacobs across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father George Jacob (~0.92 confidence) and mother Beulah Jacobs (~0.92 confidence) and mother Josephine Jacob (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Jacob
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Beulah Jacobs
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Josephine Jacob
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Jacobs
Son · 1930 · age 13 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Henry Jacobs
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Jacobs
Sibling · 1930 · age 15
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 — Lehigh, Pennsylvania
Open full size
1930 US Federal Census — Lehigh, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2064:0236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Lillie B. H. Heilman | 60 | Sister | Saleslady | Pennsylvania |
| 52 | Sarah A. E. Heilman | 71 | Sister | — | Pennsylvania |
| 53 | James P. Culbertson | 48 | Head | President | Pennsylvania |
| 54 | Anna M. Culbertson | 45 | Wife | — | Pennsylvania |
| 55 | Beulah M. Jacobs | 37 | Head | Dealer | Pennsylvania |
| 56 | Henry A. Jacobs | 16 | Son | — | Pennsylvania |
| 57 | Irene A. Jacobs | 15 | Daughter | — | Pennsylvania |
| 58 | Robert Jacobs THIS PERSON | 13 | Son | — | Pennsylvania |
| 59 | Mary Trauer | 73 | Head | — | Pennsylvania |
| 60 | Kate L. Trauer | 61 | Sister | — | Pennsylvania |
| 61 | Abraham Rockmaker | 43 | Head | Broker | Russia |
| 62 | Lena Rockmaker | 40 | Wife | — | Russia |
| 63 | Lawrence Rockmaker | 21 | Son | Salesman | Pennsylvania |
| 64 | Gordon Rockmaker | 15 | Son | — | Pennsylvania |
| 65 | Wilmer Rockmaker | 14 | Son | — | Pennsylvania |
| 66 | John R. Bittenbender | 52 | Head | — | Pennsylvania |
| 67 | Lillian E. Bittenbender | 23 | Daughter | — | Pennsylvania |
| 68 | Karen Bittenbender | 22 | Daughter | Assistant | Pennsylvania |
| 69 | Anna J. Smith | 22 | Boarder | Teacher | Pennsylvania |
| 70 | Edith Guerard | 26 | Boarder | Director Health | Missouri |
| 71 | George Trapp | 52 | Head | — | Pennsylvania |
| 72 | Marie A. Trapp | 48 | Wife | — | Alsace France |
| 73 | Paul F. Trapp | 20 | Son | — | Pennsylvania |
| 74 | Marie L. Trapp | 18 | Daughter | — | Pennsylvania |
| 75 | Gerard J. Trapp | 11 | Son | — | Pennsylvania |
| 76 | Alfred J. Trapp | 48 | Brother | Purchasing | Pennsylvania |
| 77 | Elmer Thomas | 52 | Head | Salesman | Pennsylvania |
| 78 | Ada Thomas | 48 | Wife | — | Pennsylvania |
| 79 | Charlotte Hendricks | 76 | Mother-in-law | — | Pennsylvania |
| 80 | Charles H. Kunkle | 56 | Head | Wire Drawer | Pennsylvania |
| 81 | Harriet Kunkle | 54 | Wife | — | Pennsylvania |
| 82 | Mary L. Roberts | 29 | Daughter | Cashier | Pennsylvania |
| 83 | Charles Roberts | 6 | Grandson | — | Pennsylvania |
| 84 | Thomas Roberts | 4 | Grandson | — | Pennsylvania |
| 85 | John E. Miller | 52 | Head | Meat Cutter | Pennsylvania |
| 86 | Amy Miller | 43 | Wife | — | Pennsylvania |
| 87 | Mildred Miller | 14 | Daughter | — | Pennsylvania |
| 88 | Benton Todd | 58 | Head | Salesman | Maryland |
| 89 | Esther M. Todd | 37 | Wife | Bookkeeper | Maryland |
| 90 | Peter R. Mcgrue | 62 | Head | Engineer | Pennsylvania |
| 91 | Rebecca Mcgrue | 57 | Wife | — | England |
| 92 | Laura Huth | 42 | Head | — | Pennsylvania |
| 93 | Malcolm W. Gross | 57 | Head | Mayor & Lawyer | Pennsylvania |
| 94 | Mabel E. Gross | 44 | Wife | — | Pennsylvania |
| 95 | Elizabeth S. Gross | 18 | Daughter | — | Pennsylvania |
| 96 | John Gross | 21 | Son | — | Pennsylvania |
| 97 | Anne Gross | 25 | Friend | — | Pennsylvania |
| 98 | Lewis J. Wolf | 67 | Head | — | Pennsylvania |
| 99 | Alice E. Wolf | 62 | Wife | — | Pennsylvania |
| 100 | Ulrich E. Grew | 64 | Head | Agent | Pennsylvania |
Pedigree Summary
Robert + 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 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)