Ok, I did my own research here and it looks more likely since Martha was YOUNG! I found most of the following data on-line in the Nunda Herald (Crystal Lake, McHenry, IL) newspaper Marriages and Obits.
J.S. Klinck b. 22 dec 1806, d 28 mar 1890 at age 83.
m1 30 dec 1829 Elvira Huntington b 28 mar 1803 d. 25 sep 1833
m2 2 mar 1834 Abigail Ferris d 14 Sep 1844
m3 Hannah Curtis Huntington (the name is shown as "Mary Curtis") b. 13 Aug 1806 d. 30 apr 1874 (?)
m4. Martha Margaretta Magee b. ~1842 d 10 Nov 1904 at age 62
Leona (dau of J.S. and Martha) was married to Carl J.T. Zange on 22 Oct 1896 and had her son Edward in 1916. So if Leona was born in 1879 when her mom was about 37 she might have been about 17 when she got married, and had Edward when she was about 38. This makes sense because there is a "baby girl" listed under J.S. Klinck's family in the 1880 Census for McHenry Co, IL.