There are two marriage records - seem to be different pages in the record book. Father J Taylor Pennock, mother Lydia Roderick/Roadtruck/Rhoderick.
John Taylor Pennock married Lydia in 1874, and later Susan J Roadtruck in 1881.
Evidently something happened to his mother Lydia? Her father seems to also be named Zail/Zail. Use the free search tool at: https://familysearch.org/search for more records.
Zale is living with Holloway family in KS in 1880. Doesn't indicate relationship.
Indiana, Marriages, 1811-1959
Citing this Record: "Indiana, Marriages, 1811-1959," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/27V9-F71
Marriage 23 Feb 1901
Registration Tipton, IN
Residence Place: , Tipton, IN
Male Age 24 White
Birthplace: , Hamilton, IN
Father Taylor J Pennock
Citing this Record: "Indiana, Marriages, 1811-1959," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/27V9-K75
Name: Zala Pennock
Marriage 23 Feb 1901 Tipton, IN
Mother Lydia Roadrick
Spouse Rebecca Ann Coats Tipton, , IN
U S Census, 1870 Jackson, Hamilton, IN
Citing this Record: "United States Census, 1870," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MXXP-BBQ
Zail Rhoderick M 38 OH
Lucinda Rhoderick F 38 OH
Lydia Rhoderick F 14 IN
Charles L Rhoderick M 12 IN
Hiram Rhoderick M 8 IN
John M Rhoderick M 5 IN
Clemintine Rhoderick F 1 IN
Zale in KS in 1880 with Holloway family: Citing this Record"United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MFP1-7H7
Numerous records on John Tayler Pennock 1st wife Lydia Roadtruck/Roderick married 1874; 2nd wife Sarah J. Roadtruck married 1881 below: