Shakespeare, William - author of many plays and sonnets including Cymbeline written in about 1611.
Cymbeline (King of Britain) has a daughter Imogen who needs to get somewhere in a hurry. Upon being told a horse will travel 20 miles in a day she complains the animal isn't quick enough:
Why, one that rode to's execution, man,
Could never go so slow: I have heard of riding wagers,
Where horses have been nimbler than the sands
That run i' the clock's behalf.
Cymbeline III.ii.67 - possibly the only reference to betting on horse racing in the entire Shakespearean canon.