Frank Duval Cebelak (1903-1979) lived at 927 Michigan Street, Grand Rapids, circa 1929-1930, per his name and address written in his notebook #1 in this collection. He is said to be the son of Joseph Cebelak, however, this is not confirmed by other evidence. Frank D. Cebelak, born 1903 and documented in the census as the son of Andrew & Mary and brother of Robert J. Cebelak, appears to be more likely as the author of the notebooks here. Frank's notebook #2 gives a couple of addresses for a Private Robert J. Cebelak, inside the front cover. A Frank J. Cebelak (1905-1990), not the Frank D. Cebelak who gave these expense books, appears to be the son of Joseph. Military records for Frank D. Cebelak, 1938-1946, list his civil occupation as a gas and oil man, with an enlistment day of Oct. 14, 1942; he was single.

Presuming that the Robert J. Cebelak is that same Robert who authored the time books in this collection, this is probably Robert Joseph Cebelak (1919-1996), son of Andrew & Mary Cebelak, per the 1930 census. The 1930 census lists both Frank and Robert for the first time, since Frank was several years older than Robert. Military records for Robert J. Cebelak, 1938-1946, list his civil occupation as an automobile serviceman, with an enlistment date of Feb. 6, 1942; he was single.

Joseph Cebelak was a member of the Moose lodge, No. 50, and the Polish National Alliance, group No. 744 in Grand Rapids. Joseph died in April of 1948. Census records list a Joseph Cebelak, read as Abelak, for the 1910 census, born in Russia (later listed as Poland) about 1871, immigrating to the United States in 1882.

Andrew, as well as Joseph, are listed as having been born in Russia (later listed as Poland), although Andrew was considerably younger than Joseph. No relationship between Andrew and Joseph has yet been established, although Joseph was several years older than Andrew.