1.  Allen L. Potts.  Marion County, Ohio, Probate Court Marriage Records, Vols. I-XII, 1824-1902 (online at Heritage Pursuit):

Hoke, Will M. - 24

Straub, Zoa M. - 21

7/10/1887

Rev. A.D. Matthews

2.  Ohio Genealogical Society.  1991.  Index to the 1880 Federal Population Census for the State of Ohio.  (Broderbund  CD-20):

Hoke, William

Waldo Twp.

p. 129D

3.  Family Quest Archives Digital Microfilm:  1900 Census, Ohio:  Marion and Medina Counties (Heritage Quest Disk No. T623-1302):  Waldo Twp., Marion Co., OH, p. 294B, 108/110,  enumerated 11 Jun 1900 (extracted by Diana Gale Matthiesen).  For an explanation of what the column numbers mean, please see What the Census Numbers Mean (missing columns contained no data). 

3	4	5	6	7	8	9	10	11	12	13	14	15	19	20	21	22	23	24	25	27	28
Hoke William	Head	W	M	Dec 1864	35	M	13			OH	PA	PA	Farmer	0		Y	Y	Y	R	F	37
____ Zoa M	Wife	W	F	May 1867	33	M	13	2	2	OH	OH	OH				Y	Y	Y
____ Burdett	Son	W	M	Feb 1888	12	S				OH	OH	OH	At School		8	Y	Y	Y
____ Ethel S	Dau	W	F	Oct 1894	5	S				OH	OH	OH

Zoa has shaved a year or two off her age.  Inexplicably, so has William, unless he lied about his age when he was married. 

4.  J. Wilbur Jacoby.  1907. A History of Marion County, Ohio, and Representative Citizens.  Biographical sketch of Robert S. DOMBAUGH, Zoa's brother-in-law.