Irwinn lists his age as 42 years old in 1924, when married.
"New York, County Marriages, 1908-1935," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.2/9MNC-SPZJ : accessed 17 Jun 2014), Irwin Kauffman and Edith A Hayden, 11 Sep 1924; citing , Niagara, New York, United States; FHL microfilm 0897563.
Name: Irvin Kauffman Event Type: Death Event Date: 15 Sep 1952 Gender: Male Age: 70 Race: White Birth Date: 18 Oct 1881 Birthplace: Fairfield County, Ohio Birth Year (Estimated): 1882 Father's Name: Samuel Kauffman Mother's Name: Barbara Landis
Eventhough he is Irvin on the death Index and Irwinn on the marriage record, the same parents are listed on both documents: Samuel Kauffman and Barbara Landis.
"Ohio, Deaths, 1908-1953," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/X6RT-F6K : accessed 18 Aug 2014), Irvin Kauffman, 15 Sep 1952; citing , reference certificate; FHL microfilm 2246306.
