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Research: How is Tony Sejda related to Leon Sejda (Sejda-7)

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Date: [unknown] [unknown]
Location: [unknown]
Surname/tag: Sejda
Profile manager: Rob Bongiovi private message [send private message]
This page has been accessed 121 times.


Problem Statement

Tony Sejda is listed in the 1920 US Census in Leon Sejda's household. According to family, Tony's father in Leon's brother (even though the census calls him a step-brother). There is also a death record that appears to be the same person.[1] He may also appear in the 1926 Hammond Directory as Anton Sejda.[2]


  1. Tony's Death certificate reports his parents as Andrew Sejda and Mary Kozecka.
  2. There is a birth record for a Antoni Sejda whose parents are Alexander Sejda and Mary Kozecka born at about the right time.
  3. The marriage record for Alexander Sejda and Mary Kozecka says Alexander's parents are Marcin Sejda and Lowyza Szydlik.
  4. Marcin Sejda and Lowyza Szydlik are Leon Sejda's parents
  5. Therefore, Leon Sejda is Tony's Uncle
  6. Although Henry Sejda's daughter's called him "Uncle Tony," they were, in fact, first cousins once removed.


24 Jan 2021Analyzing Evidence for Anthony Seyda
Added profile for Anthony Seyda (1895-1970)
Created Research Summary for Anthony Seyda to track evidence analysis
Added profile for Mary (Kosakowski) Seyda (-aft.1970) (wife)
Added profile for Andrew Sejda (bef.1880-) (father)
Added profile for Mary Kozicka (bef.1875-) (mother)
Located obituary
Noted there is a tree on Ancestry with Anthony but no parents.
This is a ship record for Anthony and his wife, Mary. It is NOT immigration. Looks like it could be a honeymoon? Actually I think they are returning from their wedding!
World War II draft card that gives a birthplace.
Naturalization index card -- actual record may have parents. Here is another card
Here is the application for his veteran's gravestone that gives service info.
World War I Service card Will have to go to FHL to see image
Holy Cross Cemetery Intermnet card forAnthony and Mary
On Fold3, found his outbound record for World War I which lists Leon Sejda (1870-1935) as his POC. His return record lists Leon as his brother
Located some interesting records in Genetika index. Should post this one in the translations site.
Broadened search and may have found the father Alexander Sejda. Image clearly shows Marcin Sejda (abt.1827-).
This index appears to have the marriage of his parents. This is the image
Index of records of children of Alexander Sejda and Marianna Kozicka I believe this is Tony's parents.
This is the record of Antoni and Marianna's marriage -- they married in Poland?
Perhaps his mother was a first wife. See the Antoni birth in this index
Uploaded the Jozef Sejda birth record to the Genealogical Translations site to see if the date matches.
25 Jan 2021Translation available on Facebook. It does not look like this is Tony. Moving on to the Antoni record.
Looked at this index including an Antoni Sejda born in 1892. Looked at the the image and you can see it is clearly mis-indexed and that the mother and father is the expected Alexander Sejda and Marianna Kozicka. Uploading to Facebook for translation.
27 Jan 2021 Translation indicates this is the right Antoni, i.e., Tony. Let's find Alexander's birth or marriage record.

Requested translation of Alexander's marriage record. Here is the index and the Image.

29 Jan 2021

Translation shows that Tony's father Alexander is in fact the child of the same couple who are the parents of Leon Sejda, solving the mystery.

I think this is the link.

Alexander Sejda (b1868) and Leon Sejda (1870-1935) are brothers. Alexander married Marianna Kozicka in 1892. There is only one son in 1895 -- Joseph?

Ideas/To Dos

Look for obituaryClosedSearched google for "tony sejda obituary 1970", "tony seyda obituary 1970", and anthony seyda obituary 1970 -- no results

Searched on Ancestry -- led to clipping

Look for marriageOpenThis is the record of Antoni and Marianna's marriage -- they married in Poland?
1930 CensusOpen
1940 CensusOpen
Holy Cross Cemetery Index SearchClosedLocated Holy Cross Cemetery Internment card forAnthony and Mary
Find a GraveClosedLocated Mary's. Had to create Anthony's. Requested photos for both.
Look for immigration record Open1920 census says he immigrated in 1912.

Status = Open/Closed/In-Work

Future research

Daughter Irene's birth certificate
Son John's birth certificate


  1. Indiana, Death Certificates, 1899-2011, 1970 roll 4, image 1272, Anthony Seyda, 14 March 1970; digital images, Operations, Inc, ( : downloaded 26 December 2020); Indiana Archives and Records Administration; Indianapolis, IN, USA; Death Certificates.
  2. ”U.S., City Directories, 1822-1995,” Operations, Inc., ( : downloaded 12 December 2020), image, “Entry for Leon Sejda,” p. 391; Polk’s Hammond (Indiana), Calumet City and Burnham (Illinois) City Directory 1926.


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