Bombay Presidency, Paisa of Ahmedabad Mint, AH 1233 RY 12.

[Oesho]

but modern day it's called Dehli

you mean DELHI

[asm]

Well presumably the names origin is from a previous ruler from the Sultanate or Mughal era so would be Ahmad ?

As I mentioned earlier, the name is, in India pronounced as Ahmed (Eh-mad and not as Eh- maad). I am not sure how it is translated in texts as Ahmad. In fact, all the people with a similar sounding name in Iran, Turkey and Egypt that I know, write and pronounce it as Ahmed.

Amit

[Pabitra]

you mean DELHI

Delhi is English spelling.
Among local people and in Hindi, more often than not, it is spelled as well as pronounced as either 'Dehli' or 'Dilli'

[capnbirdseye]

you mean DELHI

Yes I unfortunately made a typo of the most important word 

[Figleaf]

I think the Ahmed/Ahmad thing is a consequence of one the vagaries of the English language, where "man" and "men" are pronounced in what sounds to the foreign ear like virtually the same way. While the obvious way out would be to let the people who live there decide how to spell geographical names, in practice it is the other way around. For all kinds of reasons, or lack thereof, foreigners insist on maligning local names. Some more or less amazing examples:

Köln = Cologne (UK, FR)
Lille = Rijssel (NL)
Lyon = Lyons (UK)
Geertruidenberg = Mont-Sainte-Gertrude (FR)
Wien = Vienna (UK), Vienne (FR), Wenen (NL)
's-Hertogenbosch = Bois-le-duc (FR)
Canterbury = Kantelberg (archaic NL)
Praha = Prague (FR, UK), Praag (NL)

And the worst of all:

Aachen = Aken (NL) Aix-la-Chapelle (EN, FR). As it is close to the German border, it actually needs multi-lingual direction signs in several countries.

Peter

[Pabitra]

Proper nouns must not change but they do.
Antwerp
Antwerpen ( Flemish )
Anverse ( French)
Antoepia ( Spanish)