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Mary Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sussex-County, Delaware
Our Model Tree links this Mary Lynch across the 1920, 1930 and 1940 US Censuses in Sussex-County, Delaware (XGBoost, ~Confirmed), with identified parents William & Clarence — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sussex-County, Delaware |
| Surname | Lynch |
| Given Name | Mary D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Rep. Dist. # 9 |
| 1935 Residence (County) | Sussex |
| Additional Details | |
| Occupation | Trained Nurse |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 850 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Trained Nurse |
| Township / Ward | Rep Dist 9 |
| 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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lynch | Daughter | — | 23 | ~1917 |
| Ann Lynch | Daughter | — | 10 | ~1930 |
| Clarence Lynch | Head | — | 43 | ~1897 |
| Caroline Lynch | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Sussex, Delaware
Other, age 2
Sussex, Delaware · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary A |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Occupation | Engineer |
| Industry | Tug Boat |
| Class of Worker | W |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
Sussex, Delaware
Daughter, age 13
Sussex, Delaware · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Sussex-County, Delaware
Daughter, age 23
Sussex-County, Delaware · implied b. ~1917 — 4 household members
| Surname | Lynch |
| Given Name | Mary D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Rep. Dist. # 9 |
| 1935 Residence (County) | Sussex |
| Occupation | Trained Nurse |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 850 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Lynch (~0.92 confidence) and father Clarence Lynch (~0.92 confidence) and father Isaac Lynch (~0.81 confidence) and father Ezekiel Lynch (~0.81 confidence) and mother Hester Lynch (~0.81 confidence) and mother Maggie Lynch (~0.81 confidence) and mother Minnie Lynch (~0.92 confidence) and mother Caroline Lynch (~0.92 confidence) and father Edward Lynch (~0.81 confidence) and father Ezekiel Lynch (~0.81 confidence) and mother Corrie Lynch (~0.81 confidence) and mother Elsie Lynch (~0.81 confidence) and father Hiram Tidwell (~0.81 confidence) and mother Mary Tidwell (~0.81 confidence). The pedigree spans 2 generations with 14 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.84
Father
William Lynch
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Clarence Lynch
b. ~1897
Source father
● Household
· direct · ~0.92
Father
Isaac Lynch
b. ~1859
Source father>father
● Household
· direct · ~0.81
Father
Ezekiel Lynch
b. ~1858
Source father>father
● Household
· direct · ~0.81
Mother
Hester Lynch
b. ~1861
Source father>mother
● Household
· direct · ~0.81
Mother
Maggie Lynch
b. ~1860
Source father>mother
● Household
· direct · ~0.81
Mother
Minnie Lynch
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Caroline Lynch
b. ~1897
Source mother
● Household
· direct · ~0.92
Father
Edward Lynch
b. ~1872
Source mother>father
● Household
· direct · ~0.81
Father
Ezekiel Lynch
b. ~1883
Source mother>father
● Household
· direct · ~0.81
Mother
Corrie Lynch
b. ~1876
Source mother>mother
● Household
· direct · ~0.81
Mother
Elsie Lynch
b. ~1875
Source mother>mother
● Household
· direct · ~0.81
Father
Hiram Tidwell
b. ~1863
Source mother>father
● Household
· direct · ~0.81
Mother
Mary Tidwell
b. ~1867
Source mother>mother
● Household
· direct · ~0.81
This person
Anchor record
Mary Lynch
Daughter · 1940 · age 23 · b. ~1917 · Delaware
★ You are viewing this record
Sibling
Ann Lynch
Sibling · 1940 · age 10
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
1940 US Federal Census — Sussex-County, Delaware
Open full size
1940 US Federal Census — Sussex-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00548-00440)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John W. Phillips | 82 | Head | — | Delaware |
| 42 | Mary Phillips | 75 | Wife | — | Delaware |
| 43 | Lester Toomey | 34 | Head | Farm Labour | Delaware |
| 44 | Florence Toomey | 24 | Wife | — | Delaware |
| 45 | Anna May Toomey | 9 | Daughter | — | Delaware |
| 46 | Levin J. Toomey | 7 | Son | — | Delaware |
| 47 | Byron Rogers | 50 | Head | Farming | Delaware |
| 48 | Ada Rogers | 47 | Wife | — | Delaware |
| 49 | Izetta Rogers | 8 | Daughter | — | Delaware |
| 50 | Paul Rogers | 6 | Son | — | Delaware |
| 51 | Ralph J. Richardson | 51 | Head | Salesman | Maryland |
| 52 | Bessie Richardson | 48 | Wife | — | Delaware |
| 53 | John M. Richardson | 24 | Son | Apprentice | Delaware |
| 54 | Ralph Jr. Richardson | 16 | Son | — | Delaware |
| 55 | Mabel Wright | 30 | Maid | Maid | Delaware |
| 56 | William Rawlins | 56 | Head | Foreman Of Gang | Delaware |
| 57 | Sarah Rawlins | 49 | Wife | — | New York |
| 58 | George W. Rogers | 23 | Head | Clerical | Delaware |
| 59 | Anita Jane Rogers | 19 | Wife | — | Delaware |
| 60 | Preston Simmons | 30 | Boarder | Tapper | Delaware |
| 61 | Dorothy Simmons | 28 | Boarder wife | — | Delaware |
| 62 | Jerry Lee Simmons | 1 | Boarder son | — | Delaware |
| 63 | Clarence K. Lynch | 43 | Head | State Troop | Delaware |
| 64 | Caroline P. Lynch | 43 | Wife | — | Delaware |
| 65 | Mary D. Lynch THIS PERSON | 23 | Daughter | Trained Nurse | Delaware |
| 66 | Ann R. Lynch | 10 | Daughter | — | Delaware |
| 67 | Daniel J. Jr. Layton | 29 | Head | Lawyer | Delaware |
| 68 | Mary Layton | 30 | Wife | — | Maryland |
| 69 | Stanford E. Davis | 50 | Head | Cleaner + Presser | Delaware |
| 70 | Elizabeth Davis | 57 | Wife | Laundress | Delaware |
| 71 | Julian H. Mccauley | 54 | Head | — | Nevada |
| 72 | Josephine Mccauley | 49 | Wife | — | Mississippi |
| 73 | Florence Mccauley | 12 | Daughter | — | Nevada |
| 74 | William H. Mccauley | 9 | Son | — | Nevada |
| 75 | C. A. Kephart | 53 | Boarder | — | Maryland |
| 76 | Edward E. Morris | 53 | Head | Insp. Of Autos | Delaware |
| 77 | Lottie J. Morris | 52 | Wife | — | Delaware |
| 78 | Charles Morris | 20 | Son | Apprentice | Delaware |
| 79 | S. Elwood Veasey | 29 | Head | Dealer | Delaware |
| 80 | Bessie W. Veasey | 30 | Wife | — | Maryland |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 parents
~0.92
Gen 2 · 10 grandparents
~0.81
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)