[mcv]

It's one of those cities that has two names: Den Bosch and 's Hertogenbosch.

The first simply means "the forest", in slightly archaic spelling. The second is short for "des hertogenbosch", which is archaic for "the duke's forest". "Des" is archaic genitive that's barely used any more in Dutch except in a few phrases and place names.

's ochtends => des ochtends => of the morning

's avonds => des avonds => of the evening

's Hertogenbosch => the duke's forest

's Gravenhave => des graven hage => the count's hedge (also known as Den Haag / The Hague)