Here are some marriage records from familysearch. Both of Martin's records list his parents as Elijah Hoyt and Elizabeth (Mary Elizabeth/Lizzie) Higsby.
Also found the marriage record of Elijah and Mary Elizabeth
Maybe from the information you can find a source for the documents.
Good Luck
Michigan, Marriages
https://familysearch.org/pal:/MM9.1.1/N3R3-9WV
groom Martin Luther Hoyt
Residence Gowrie, IA
age 57 years birth 1860 Michigan
Marital Status 2nd
father: Elizah Hoyt mother: Elizabeth Higsby
marriage 28 Apr 1917 Kalamazoo, Michigan
Official Isaiah Wilson, minister
bride's name: Nettie Berns
Residence Gowrie, IA
age: 37 years birth 1880 Iowa
marital status 1st
bride's father: Thomas Smith mother: Elizabeth E. Lewis
Witnesses: Harry & Olive Barton
image number: 264 (this image of the actual county record can be viewed online)
reference number: v 3 p 114 rn 16714
Iowa, Marriages
https://familysearch.org/pal:/MM9.1.1/XJGB-15X
groom Martin S. Hoyt
birthplace: Michigan
White age unk
father's name: Elyah Hoyt mother Lizzie M. Higsby
marriage date: 19 Apr 1890 Gowrie, Webster, Iowa
bride Nellie B. Gray
birth: 1875 birthplace: Iowa age: 15
father James Gray mother: Lizzie Adams
indexing project (batch) number: M58986-2
Michigan, Marriages
https://familysearch.org/pal:/MM9.1.1/FC2N-R45
Groom Elijah Hoyt
birth date: 1834 age: 19
Bride Mary Lizzy Higsby
birth date: 1838 age: 15
marriage date: 14 Oct 1853 Calhoun,Michigan
indexing project (batch) number: M51829-2