MS
Mary Spencer — 1930 US Census Record
Model Tree available1930 United States Federal Census · Pottawattamie, Iowa
Our Model Tree links this Mary Spencer across the 1920, 1930 and 1940 US Censuses in Pottawattamie, Iowa (XGBoost, ~Confirmed), with identified parents Harry & Hazel — first a daughter (b.~1918), then head of a 5-person household.
Age 12
b. ~1918
Female
Daughter
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Pottawattamie, Iowa |
| Surname | Spencer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Council Bluffs City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bertice Spencer | Daughter | — | 8 | ~1922 |
| Loretta Spencer | Daughter | — | 16 | ~1914 |
| Mary Spencer | Daughter | — | 12 | ~1918 |
| Henry Spencer | Son | — | 14 | ~1916 |
| Hazel Spencer | Spouse | — | 38 | ~1892 |
Census Appearances
1920
Pottawattamie, Iowa
Daughter, age 2
Pottawattamie, Iowa · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | Mary C |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Pottawattamie, Iowa
Daughter, age 12
Pottawattamie, Iowa · implied b. ~1918 — 5 household members
| Surname | Spencer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Spouse, age 23
Pottawattamie-County, Iowa · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | Martha K. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Pott |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mary Spencer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Spencer (~0.92 confidence) and mother Hazel Spencer (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Spencer
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Hazel Spencer
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Spencer
Daughter · 1930 · age 12 · b. ~1918 · Iowa
★ You are viewing this record
Sibling
Henry Spencer
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertice Spencer
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Spencer
Sibling · 1930 · age 16
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 — Pottawattamie, Iowa
Open full size
1930 US Federal Census — Pottawattamie, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel679:0342)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hazel Spencer | 38 | Wife | — | Iowa |
| 2 | Loretta Spencer | 16 | Daughter | — | Iowa |
| 3 | Henry Spencer | 14 | Son | — | Iowa |
| 4 | Mary Spencer THIS PERSON | 12 | Daughter | — | Iowa |
| 5 | Bertice Spencer | 8 | Daughter | — | Iowa |
| 6 | Helen Axhelm | 23 | Head | — | Iowa |
| 7 | Emma Axhelm | 3 | Daughter | — | Iowa |
| 8 | William Pegel | 38 | Head | Car Inspector | Iowa |
| 9 | Mary Pegel | 35 | Wife | — | Iowa |
| 10 | Frances Pegel | 16 | Daughter | — | Iowa |
| 11 | Robert Pegel | 15 | Son | — | Iowa |
| 12 | Howard Pegel | 14 | Son | — | Iowa |
| 13 | Laura Pegel | 12 | Daughter | — | Iowa |
| 14 | Nora Pegel | 10 | Daughter | — | Iowa |
| 15 | Edward Pegel | 7 | Son | — | Iowa |
| 16 | Helen Pegel | 5 | Daughter | — | Iowa |
| 17 | Betty Pegel | 3 | Daughter | — | Iowa |
| 18 | Charlie Britt | 51 | Head | Boilermaker Helper | Iowa |
| 19 | Milly Britt | 72 | Mother | — | United States |
| 20 | James H Britt | 18 | Son | Boilermaker Helper | Kansas |
| 21 | Thomas C Britt | 33 | Head | Switchman | Kansas |
| 22 | Esther E Britt | 33 | Wife | Laborer | Iowa |
| 23 | Victor C Britt | 12 | Step son | — | Kansas |
| 24 | Frank R Mckee | 33 | Head | Attendant | Iowa |
| 25 | Mary Mckee | 29 | Wife | — | Iowa |
| 26 | Paul Mckee | 10 | Son | — | Iowa |
| 27 | Shirley Mckee | 7 | Daughter | — | Iowa |
| 28 | Billy Mckee | 4 | Son | — | Iowa |
| 29 | Jack Mckee | 2 | Son | — | Iowa |
| 30 | Agnes F Kane | 55 | Head | Clerk | Wisconsin |
| 31 | Katherine Kane | 28 | Daughter | Nurse | Iowa |
| 32 | Marie Kane | 28 | Daughter | Clerk | Iowa |
| 33 | Thomas Kane | 26 | Son | Clerk | Iowa |
| 34 | Mary Casey | 76 | Mother | — | Vermont |
| 35 | Alfred Rasmussen | 36 | Head | Salesman | Iowa |
| 36 | Nellie Rasmussen | 45 | Wife | — | Iowa |
| 37 | Christina Rasmussen | 12 | Daughter | — | Iowa |
| 38 | Hollyse Brown | 40 | Head | Social Work | Iowa |
| 39 | Martin Dailey | 65 | Head | Freight | Ireland |
| 40 | Ralph Bragg | 39 | Head | Billing Clerk | Illinois |
| 41 | Lovisa Bragg | 36 | Wife | Saleswoman | Iowa |
| 42 | Don Bragg | 18 | Son | Laborer | Iowa |
| 43 | Nicholas Leier | 61 | Head | — | Germany |
| 44 | Bernard Rohlway | 52 | Son in law | Mechanic | Germany |
| 45 | Mary Rohlway | 52 | Daughter | — | Iowa |
| 46 | Tharsilla Rohlway | 17 | Grand daughter | — | Iowa |
| 47 | Clarence Briggs | 40 | Son in law | Laborer | Massachusetts |
| 48 | Martha Briggs | 43 | Daughter | — | Iowa |
| 49 | Francis Briggs | 2 | Son | — | Iowa |
| 50 | Faye Mcmullen | 51 | Head | Laborer | Iowa |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 2 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)