Bang was born on 20 February 1776 in Copenhagen, the son of attorney general and later president of Hof- og Stadsretten Ole B.
In 1800, he and his brother-in-law Christian von Eggers bourht Benzonsdal from Jens Lauritz Barfred.
[2] After the English landed on Zealand in 1807, he gathered and equipped a volunteer corps of 200 men and led it himself to the commanding general's headquarters.
Sparresholm passed to his eldest son Oluf Henrich Niels de Bang.
The daughter Henriette Marie de Bang married the painter Frederik Sødring.