500 At The Beginning 500 At The End. Who Am I ?

Question

Who am I ?

500 at the beginning, 500 at the end,
5 in the middle is seen,
The first of all letters, the first of all figures,
Take up their stations between,
String them all together, and you will,
The name of an ancient monarch.

Please answer with proper explanation?

Answer 1

DAVID

500 = D in Roman (Start and End)
5 = V in the middle in Roman
A = First of all Letters
1 = First of all Figures which resembles I in roman

Answer 2

500 at the beginning, 500 at the end, D _ _ _ _ D
5 in the middle is seen,
The first of all letters, the first of all figures,
Take up their stations between,
String them all together, and you will,

The name of an ancient monarch.

D in Roman numerals is 500
V in Roman numerals if 5
First f all letters is A
First of all figures is I (roman)
Hence D A V I D is the answer