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William Lynch — 1920 US Census Record

Model Tree available

1920 United States Federal Census · San Francisco, California

Our Model Tree links this William Lynch across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents John & Nora — first a son (b.~1899), then head of a 9-person household.

Age 21 b. ~1899 Male Son Born: California Single

1920 Census Record Details

Census Year1920
LocationSan Francisco, California
SurnameLynch
Given NameWilliam
Relationship to HeadSon
SexM
Color / RaceWhite
Age21
Marital StatusSingle
BirthplaceCalifornia
Father's BirthplaceIreland
Mother's BirthplaceIreland
Additional Details
OccupationChauffeur
IndustryDraying
Class of WorkerW
Can ReadYes
Can WriteYes
Speaks EnglishYes
Birth StateCalifornia
Birth CountryUnited States
Birthplace (normalized)california
OccupationChauffeur
Township / WardSan Francisco
Est. Birth Year~1899

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 1920 census.

Name Relation to head Relative to William Age Birth yr
Mary Lynch Daughter — 14 ~1906
Nora Lynch Daughter — 12 ~1908
Marion Lynch Daughter — 9 ~1911
John Lynch Head — 50 ~1870
Walter Lynch Son — 16 ~1904
Raymond Lynch Son — 18 ~1902
William Lynch Son — 21 ~1899
John Lynch Son — 25 ~1895
Nora Lynch Spouse — 45 ~1875

Census Appearances

1900
San Francisco, …
Son, age 2
San Francisco, California · implied b. ~1898 — 7 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Lynch
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 1
Marital Status Single
Birthplace California
Birth Month Mar
Birth Year 1898
Father's Birthplace Ireland
Mother's Birthplace Ireland
Can Read Yes
Can Write Yes
Speaks English Yes
Birth State California
Birth Country United States
Birthplace (normalized) california
1910
San Francisco, …
Son, age 11
San Francisco, California · implied b. ~1899 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Lynch
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 11
Marital Status Single
Birthplace California
Father's Birthplace Ireland
Mother's Birthplace Ireland
Can Read Yes
Can Write Yes
Speaks English Yes
Birth State California
Birth Country United States
Birthplace (normalized) california
1920
San Francisco, …
Son, age 21
San Francisco, California · implied b. ~1899 — 9 household members
Surname Lynch
Given Name William
Relationship to Head Son
Sex M
Color / Race White
Age 21
Marital Status Single
Birthplace California
Father's Birthplace Ireland
Mother's Birthplace Ireland
Occupation Chauffeur
Industry Draying
Class of Worker W
Can Read Yes
Can Write Yes
Speaks English 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.
Model Tree available
Our Model Tree links William Lynch across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage. Identified parents: father John Lynch (~0.92 confidence) and mother Nora Lynch (~0.92 confidence) and mother Margaret Lynch (~0.92 confidence) and father John Lynch (~0.92 confidence) and mother Nora Lynch (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1 Parents confidence ≈ 0.92
Father
John Lynch
b. ~1863
Source father
● Household · direct · ~0.92
Mother
Nora Lynch
b. ~1867
Source mother
● Household · direct · ~0.92
Mother
Margaret Lynch
b. ~1868
Source mother
● Household · direct · ~0.92
Father
John Lynch
b. ~1870
Source father
● Household · direct · ~0.92
Mother
Nora Lynch
b. ~1875
Source mother
● Household · direct · ~0.92
This person
Anchor record
William Lynch
Son · 1920 · age 21 · b. ~1899 · California
★ You are viewing this record
Sibling
Walter Lynch
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Lynch
Sibling · 1920 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nora Lynch
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lynch
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lynch
Sibling · 1920 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Lynch
Sibling · 1920 · age 18
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

1920 US Federal Census — San Francisco, California Open full size

Page Contents

50 people indexed on this census page (ia:1920:14thcensusofpopu135unit:0998)

Line Name Age Relation Occupation Birthplace
1 Maud Lassus 18 Wife — California
2 Harry Lassus 12 Son — California
3 Richard Johnelle 53 Head Clerk Switzerland
4 Mary Johnelle 59 Wife — Switzerland
5 Otto Johnelle 24 Son Machinist California
6 Frieda Johnelle 26 Daughter — California
7 David York 35 Head Machinist California
8 Annie York 31 Wife — California
9 Irene York 12 Daughter — California
10 John Hansen 21 Brother-in-law — Denmark
11 Daniel Lazarus 40 Head Machinist Pennsylvania
12 Agnes Lazarus 41 Wife — Sweden
13 Elliott M. Lazarus 12 Son — California
14 Eleanor Lazarus 10 Daughter — California
15 Mary Peterson 67 Mother-in-law — Sweden
16 Wolfgang Kane 40 Head Blacksmith Switzerland
17 Anna Kane 35 Wife Housewife Switzerland
18 Carl Kane 5 Son — Switzerland
19 Hans Longman 31 Head Electrician Germany
20 Hulda Longman 27 Wife Housewife Norway
21 Bertha Willemsen 35 Boarder Stenographer England
22 Catherine Hiles 48 Head — Italy
23 Andrew Hiles 28 Son Baker California
24 Joe Hiles 18 Son Farmer California
25 Freddie Hiles 15 Son — California
26 Marco Pattini 38 Head Cook Austria
27 Annie Pattini 32 Wife Housewife Austria
28 Ruby Pattini 6 Daughter — California
29 Antone Pattini 32 Brother Smelter Austria
30 Charles Renfret 64 Head Loom Maker Ohio
31 Rosary Renfret 66 Wife Housewife North Carolina
32 John Lynch 50 Head Clerk Ireland
33 Nora Lynch 45 Wife — Ireland
34 John Lynch 25 Son Painter California
35 William Lynch THIS PERSON 21 Son Chauffeur California
36 Raymond Lynch 18 Son Clerk California
37 Walter Lynch 16 Son Stenographer California
38 Mary Lynch 14 Daughter — California
39 Nora Lynch 12 Daughter — California
40 Marion Lynch 9 Daughter — California
41 Albert Turey 33 Head Mechanic California
42 Myrtle Turey 24 Wife Housewife Oregon
43 Velma Turey 1 Daughter — California
44 Mary Symons 56 Mother-in-law — Sweden
45 Peter Cederone 43 Head Proprietor Italy
46 Mary Cederone 44 Wife Housewife Italy
47 Guiseppi Cederone 16 Son Conductor Italy
48 Tonia Cederone 14 Daughter — Italy
49 Jennie Cederone 9 Daughter — California
50 Freddie Cederone 7 Son — California

Search for William Lynch

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Pedigree Summary

William + 6 siblings
Gen 1 · 5 parents ~0.92
Max depth 4 (1900–1950 window)

About This Record & Model Tree

This record was independently indexed by YourRoots from the 1920 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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