Question: I am two five letter names
500 is at the start,
10 is in my heart.
In the middle of that is 1,
Near the end is none.
At the end is 14,
Yet that is not all that has been seen.
It's a word that rhymes with liver,
Yes, to the left of that is river.
Answer: River Dixon.
We know his name is river, so 500 being D in Roman numerals, 10 being X, 1 being I, and an is the fourteenth letter of the alphabet. D at the start, X in the middle, in the middle of those two is I, so that spells DIX, near the end is none/0, which is like an O so that's DIXON. Then to the left of that is River so, RIVER DIXON.