If he is their son, he was born prior to their marriage in Cleveland. Is is possible that they married in Bohemia and then again in Cleveland? What proof is there that he is their son?? He is listed as a son in Lottie Lederer’s obit. (MM-117)
1852 He Emigrated (1900 OH Census info)
1860 Ohio Census (Ancestry.com): Charles Lederer (36 Austria), Grocer living in Cleveland Ward 6, Cuyahoga Co. with wife, Caroline (30 Austria) and 4 kids: Sigmond (11 Austria); Morris (7 Austria); Anna (4 OH) and Sophia (1 OH).
1870 Ohio Census (Ancestry.com): Charles (48 Bohemia) living in Cleveland Ward 6, Cuyahoga Co. with wife, Lottie (43 Bohemia) and 6 kids: son, Siggler (21 Bohemia); Morris (17 Bohemia); Anna (14 OH); Sophia (11 OH); Leopold (9 OH) and Ida (8 OH).
1880 Census (Ancestry.com): Not found.
1900 OH Census (Ancestry.com): Sigmund Lederer (Jan 1849 Austria, emigrated 1852) living in Cleveland Dist. 57, Cuyahoga Co. with wife, Emilia (Jun 1861 IN); married 20 yrs with 2 kids, both living with kids: Arthur (July 1882 OH) and Herbert (Dec 1893 OH).
Obituary info in Jewish Review & Observer: Vol. 50 No. 9 p. 3 Col. 4 and 50/10/3/3. (MM-131)
Obituary copied by papers in New York and Chicago (MM-119)
Cleveland Necrology File: Name: Lederer, Sigmund S.
Date: Feb. 10, 1924
Source: Source unknown;  Cleveland Necrology File, Reel #049.
Notes: Lederer-Sigmund S., beloved husband of Emily (nee Miers), age 74 years; father of Arthur A. and Herbert H., passed away at his residence, New Amsterdam hotel, 12:40 p. m. Feb. 7. Funeral services at Mayfield chapel, Sunday, Feb. 10, at 2 p. m. Please omit flowers. New York papers and Chicago please copy.
Buried in Mayfield Cemetary (MM142)