WM
William Mcmahon — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Forrest, Mississippi
Our Model Tree links this William Mcmahon across the 1920 and 1930 US Censuses in Forrest, Mississippi (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 9-person household.
Age 23
b. ~1907
Male
Son
Born: Alabama
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Forrest, Mississippi |
| Surname | McMahon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
| Township / Ward | Beat 2 |
| Est. Birth Year | ~1907 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Mcmahon | Spouse | — | 53 | ~1877 |
| Norman Mcmahon | Son | — | 25 | ~1905 |
| C Mcmahon | Head | — | 55 | ~1875 |
| Maude Mcmahon | Daughter | — | 14 | ~1916 |
| Mabel Mcmahon | Daughter | — | 28 | ~1902 |
| Irene Mcmahon | Daughter | — | 20 | ~1910 |
| Ruth Mcmahon | Daughter | — | 18 | ~1912 |
| William Mcmahon | Son | — | 23 | ~1907 |
| Pauline Mcmahon | Daughter | — | 14 | ~1916 |
Census Appearances
1920
Forrest, Mississippi
Son, age 12
Forrest, Mississippi · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMahon |
| Given Name | William A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
1930
Forrest, Mississippi
Son, age 23
Forrest, Mississippi · implied b. ~1907 — 9 household members
| Surname | McMahon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Alabama |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Alabama |
| Can Read/Write | Yes |
| Birth State | Alabama |
| Birth Country | United States |
| Birthplace (normalized) | alabama |
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 Mcmahon across 2 US Census years (1920 and 1930) in Forrest, Mississippi, using XGBoost record linkage.
Show:
This person
Anchor record
William Mcmahon
Son · 1930 · age 23 · b. ~1907 · Mississippi
★ You are viewing this record
Sibling
Norman Mcmahon
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mabel Mcmahon
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Mcmahon
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Mcmahon
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Mcmahon
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maude Mcmahon
Sibling · 1930 · age 14
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 — Forrest, Mississippi
Open full size
1930 US Federal Census — Forrest, Mississippi
Page Contents
50 people indexed on this census page (ia:1930:15thcensus1145unit:0457)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Leash | 51 | Head | Farming | Mississippi |
| 2 | Lacy J Leash | 41 | Wife | Matron | Mississippi |
| 3 | Nora Leash | 17 | Daughter | — | Mississippi |
| 4 | Bennie Leash | 15 | Daughter | — | Mississippi |
| 5 | Adaline Leash | 12 | Daughter | — | Mississippi |
| 6 | J D Beale | 52 | Head | Farmer | Alabama |
| 7 | Beatrice Beale | 45 | Wife | — | Mississippi |
| 8 | Sybil Beale | 20 | Daughter | — | Alabama |
| 9 | Ray Beale | 13 | Son | — | Alabama |
| 10 | Mable Beale | 11 | Daughter | — | Alabama |
| 11 | J M Richardson | 52 | Head | Farmer | Mississippi |
| 12 | Ollia Richardson | 44 | Wife | — | Mississippi |
| 13 | M L Richardson | 24 | Son | Teacher | Mississippi |
| 14 | Earl Richardson | 14 | Son | — | Mississippi |
| 15 | Annie Ruth Richardson | 11 | Daughter | — | Mississippi |
| 16 | Clide Richardson | 9 | Son | — | Mississippi |
| 17 | Bernice Richardson | 5 | Daughter | — | Mississippi |
| 18 | W H Montgomery | 53 | Head | Farmer | Mississippi |
| 19 | Addie Montgomery | 49 | Wife | — | Mississippi |
| 20 | Mildred Montgomery | 24 | Daughter | — | Mississippi |
| 21 | Lucian Montgomery | 14 | Son | — | Mississippi |
| 22 | J R Perry | 51 | Head | Farmer | Mississippi |
| 23 | Annie Perry | 35 | Wife | — | Mississippi |
| 24 | Roy J Perry | 15 | Son | — | Mississippi |
| 25 | James W Perry | 13 | Son | — | Mississippi |
| 26 | C P Mcmahon | 55 | Head | Farmer | Alabama |
| 27 | Mary A Mcmahon | 53 | Wife | — | Alabama |
| 28 | Mabel Mcmahon | 28 | Daughter | Teacher | Alabama |
| 29 | Norman Mcmahon | 25 | Son | Salesman | Alabama |
| 30 | William Mcmahon THIS PERSON | 23 | Son | — | Alabama |
| 31 | Irene Mcmahon | 20 | Daughter | — | Alabama |
| 32 | Ruth Mcmahon | 18 | Daughter | — | Alabama |
| 33 | Pauline Mcmahon | 14 | Daughter | — | Alabama |
| 34 | Maude Mcmahon | 14 | Daughter | — | Alabama |
| 35 | B W Warren | 34 | Head | Wagoner | Mississippi |
| 36 | Willie Warren | 30 | Wife | — | Mississippi |
| 37 | Goodwill Warren | 9 | Son | — | Mississippi |
| 38 | Lola Easter Warren | 7 | Daughter | — | Mississippi |
| 39 | Helen Warren | 5 | Daughter | — | Mississippi |
| 40 | Marie Warren | 3 | Daughter | — | Mississippi |
| 41 | Hazel Warren | 1 | Daughter | — | Mississippi |
| 42 | G A Brumfield | 53 | Head | Farmer | Mississippi |
| 43 | Bertha Adline Brumfield | 44 | Wife | — | Mississippi |
| 44 | William Brumfield | 19 | Son | — | Mississippi |
| 45 | Jack Brumfield | 15 | Son | — | Mississippi |
| 46 | George Kelley | 34 | Head | Farmer | Mississippi |
| 47 | Cassie Kelley | 29 | Wife | — | Mississippi |
| 48 | Leo Kelley | 5 | Son | — | Mississippi |
| 49 | Charles Kelley | 3 | Son | — | Mississippi |
| 50 | Warly Wallace Kelley | 1 | Son | — | Mississippi |
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)