RM
Ralph Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Ralph Martin across the 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 11-person household.
Age 11
b. ~1929
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Martin |
| Given Name | Ralph E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1929 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Frederick Martin | Son | — | 17 | ~1923 |
| Irene Martin | Daughter | — | 18 | ~1922 |
| Ralph Martin | Son | — | 11 | ~1929 |
| Eleanor Martin | Daughter | — | 3 | ~1937 |
| Carl Martin | Son | — | 20 | ~1920 |
| Karolyn Martin | Daughter | — | 9 | ~1931 |
| Esther Martin | Daughter | — | 2 | ~1938 |
| Ruth Martin | Daughter | — | 8 | ~1932 |
| Helen Martin | Daughter | — | 5 | ~1935 |
| Carolyn Martin | Spouse | — | 42 | ~1898 |
| Robert Martin | Son | — | 13 | ~1927 |
Census Appearances
1930
Philadelphia, Pennsylvania
Son, age 1
Philadelphia, Pennsylvania · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Ralph E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 11
Philadelphia-County, Pennsylvania · implied b. ~1929 — 11 household members
| Surname | Martin |
| Given Name | Ralph E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Ralph Martin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Martin
Son · 1940 · age 11 · b. ~1929 · Pennsylvania
★ You are viewing this record
Sibling
Irene Martin
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Karolyn Martin
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Esther Martin
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Martin
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Martin
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Martin
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Martin
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Martin
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Martin
Sibling · 1940 · age 17
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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03708-00349)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carolyn Martin | 42 | Wife | — | Pennsylvania |
| 42 | Carl R Martin | 20 | Son | Electrician Helper | Pennsylvania |
| 43 | Irene A Martin | 18 | Daughter | New Worker | Pennsylvania |
| 44 | Frederick S Martin | 17 | Son | — | Pennsylvania |
| 45 | Robert B Martin | 13 | Son | — | Pennsylvania |
| 46 | Ralph E Martin THIS PERSON | 11 | Son | — | Pennsylvania |
| 47 | Karolyn E Martin | 9 | Daughter | — | Pennsylvania |
| 48 | Ruth M Martin | 8 | Daughter | — | Pennsylvania |
| 49 | Helen M Martin | 5 | Daughter | — | Pennsylvania |
| 50 | Eleanor Martin | 3 | Daughter | — | Pennsylvania |
| 51 | Esther J Martin | 2 | Daughter | — | Pennsylvania |
| 52 | George E Gross | 25 | Head | Electrical Engineer | Pennsylvania |
| 53 | Dorothy M Higgins | 52 | Mother | Matron | Pennsylvania |
| 54 | Lawrence Babe | 53 | Lodger | Contractor | Pennsylvania |
| 55 | Eva M Campbell | 23 | Lodger | — | Vermont |
| 56 | John J Boyle | 35 | Head | Machinist | Pennsylvania |
| 57 | Florence M Boyle | 30 | Wife | — | Pennsylvania |
| 58 | Joan F Boyle | 2 | Daughter | — | Pennsylvania |
| 59 | Donald A Boyle | 0 | Son | — | Pennsylvania |
| 60 | Eleanor M Ridings | 53 | Head | Stenographer | Pennsylvania |
| 61 | Frederick W Clements | 68 | Head | Watchman | England |
| 62 | Ida Clements | 62 | Wife | — | Pennsylvania |
| 63 | George A Luebfried | 23 | Head | — | Pennsylvania |
| 64 | Bertha H Luebfried | 35 | Daughter | Biller | Pennsylvania |
| 65 | Henry A Korn | 75 | Brother | — | Pennsylvania |
| 66 | Louise Q Bauer | 69 | Head | — | Pennsylvania |
| 67 | Here Ends Block 53 And Begins Block 60 | None | — | — | — |
| 68 | William D Long | 21 | Head | Battery Assembler | Pennsylvania |
| 69 | Viola M Long | 23 | Wife | — | Pennsylvania |
| 70 | Joseph D Long | 57 | Father in law | Fireman | Pennsylvania |
| 71 | Wilbert F Long | 24 | Brother in law | Battery Charger | Pennsylvania |
| 72 | Carl F Jorgensen | 57 | Head | Carpenter | Denmark |
| 73 | Mary J Jorgensen | 50 | Wife | — | Pennsylvania |
| 74 | Edward C Thedick | 39 | Head | Carpenter | Ohio |
| 75 | Margaret Thedick | 37 | Wife | — | Eire |
| 76 | Ruth E Thedick | 7 | Daughter | — | Pennsylvania |
| 77 | Edward C Thedick | 7 | Son | — | Pennsylvania |
| 78 | Helen V Thedick | 4 | Daughter | — | Pennsylvania |
| 79 | Jean L Thedick | 2 | Daughter | — | Pennsylvania |
| 80 | Virginia C Smythe | 44 | Head | Correspondence Clerk | Pennsylvania |
Related Census Records
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)