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Mary Welsh — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Montgomery, Pennsylvania

Our Model Tree links this Mary Welsh across the 1930 and 1940 US Censuses in Montgomery, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 7-person household.

Age 7 b. ~1923 Female Daughter Born: Penna. Single

1930 Census Record Details

Census Year1930
LocationMontgomery, Pennsylvania
SurnameWelsh
Given NameMary
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age7
Marital StatusSingle
BirthplacePenna.
Father's BirthplacePenna.
Mother's BirthplacePenna.
Additional Details
Can Read/WriteNo
Birth StatePennsylvania
Birth CountryUnited States
Birthplace (normalized)penna
Township / WardWest Conshohocken Borough
Est. Birth Year~1923

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.

7 people recorded at the same address in the 1930 census.

Name Relation to head Relative to Mary Age Birth yr
Mary Welsh Daughter — 7 ~1923
Charles Welsh Son — 5 ~1925
Thomas Welsh Son — 10 ~1920
Francis Welsh Son — 11 ~1919
John Welsh Head — 48 ~1882
John Welsh Son — 12 ~1918
Louise Welsh Spouse — 39 ~1891

Census Appearances

1930
Montgomery, Pennsylvania
Daughter, age 7
Montgomery, Pennsylvania · implied b. ~1923 — 7 household members
Surname Welsh
Given Name Mary
Relationship to Head Daughter
Sex F
Color / Race White
Age 7
Marital Status Single
Birthplace Penna.
Father's Birthplace Penna.
Mother's Birthplace Penna.
Can Read/Write No
Birth State Pennsylvania
Birth Country United States
Birthplace (normalized) penna
1940
Montgomery-County, Pennsylvania
Spouse, age 18
Montgomery-County, Pennsylvania · implied b. ~1922 — 2 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Walsh
Given Name Mary
Relationship to Head Wife
Sex F
Color / Race White
Age 18
Marital Status Married
Birthplace Penna
1935 Residence (City) Jenkintown
1935 Residence (County) Montg
Highest Grade Hs 2
1935 Residence Penna
Birth State Pennsylvania
Birth Country United States
Birthplace (normalized) penna

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.
Linked across censuses
Our Model Tree links Mary Welsh across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Welsh
Daughter · 1930 · age 7 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Thomas Welsh
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Welsh
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Welsh
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Welsh
Sibling · 1930 · age 12
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 — Montgomery, Pennsylvania Open full size

Page Contents

50 people indexed on this census page (ia:1930:fifteenthcensus00reel2085:0478)

Line Name Age Relation Occupation Birthplace
51 Carl J. Wallace 21 Son — Penna.
52 Irene Wallace 12 Daughter — Penna.
53 Antonio Lewkowicz 42 Head Laborer Poland
54 Anna Lewkowicz 36 Wife — Poland
55 Blanche Lewkowicz 17 Daughter Salesgirl Penna.
56 Helen Lewkowicz 14 Daughter — Penna.
57 Anthony Lewkowicz 12 Son — Penna.
58 John Lewkowicz 10 Son — Penna.
59 Rita M. Lewkowicz 6 Daughter — Penna.
60 Modesto Perez 37 Head Boiler Maker Mexico
61 Lola Perez 35 Wife — Mexico
62 Dora Perez 8 Daughter — Penna.
63 Otto Perez 5 Son — Penna.
64 Rodrigo Perez 38 Brother Laborer Mexico
65 Arthur H. Richardson 36 Head Carpenter Maryland
66 Marie R. Richardson 37 Wife — Penna.
67 William E. Richardson 13 Son — Penna.
68 Arthur V. Richardson 12 Son — Penna.
69 Dorothy R. Richardson 11 Daughter — Penna.
70 Reba L. Richardson 9 Daughter — Penna.
71 Marjorie M. Richardson 4 Daughter — Penna.
72 Paul E. Stiefel 31 Head Machine Operator Penna.
73 Helen V. Stiefel 36 Wife — Penna.
74 Rose M. Stiefel 6 Daughter — Penna.
75 Paul Jr. Stiefel 4 Son — Penna.
76 Charles G. Stiefel 2 Son — Penna.
77 Helen L. Stiefel 1 Daughter — Penna.
78 John T. Welsh 48 Head Gen. Clerk Penna.
79 Louise A. Welsh 39 Wife Twister Penna.
80 John T. Welsh 12 Son — Penna.
81 Francis A. Welsh 11 Son — Penna.
82 Thomas Welsh 10 Son — Penna.
83 Mary Welsh THIS PERSON 7 Daughter — Penna.
84 Charles Welsh 5 Son — Penna.
85 George B. Waters 23 Head Road Tester Penna.
86 Blanche A. Waters 21 Wife — Penna.
87 George B. Waters 5 Son — Penna.
88 William Waters 3 Son — Penna.
89 Robert Waters 2 Son — Penna.
90 John Waters 0 Son — Penna.
91 John D. Cox 26 Head Truck Driver Penna.
92 Mary A. Cox 25 Wife — Penna.
93 John D. Cox 5 Son — Penna.
94 Ruth A. Cox 2 Daughter — Penna.
95 Rita M. Cox 0 Daughter — Penna.
96 Frank M. Kennedy 43 Head Fireman Penna.
97 Sara M. Kennedy 42 Wife — Penna.
98 Elizabeth G. Kennedy 9 Daughter — Penna.
99 Francis T. Kennedy 7 Son — Penna.
100 Robert Kennedy 5 Son — Penna.

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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)

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