Peter August Möller was born on 11 April 1858 in Flo Parish, Västergötland, Sweden.

In 1897 he resigned with permission to remain as a captain in the regiment's reserve, which lasted until 1908.

He has described his experiences in Africa first in Tre år i Kongo (Three Years in the Congo) (1887), then in Resa i Afrika genom Angola, Ovampo och Damaraland (Travel in Africa through Angola, Ovampo and Damaraland) (1899).

[4] Möller passed the Bundi River when travelling from Vivi to Isangila in the lower Congo.

He wrote in 1887:[5] During our march to Issangila we encamped in the valley of the Bundi river, which is known for its great richness in buffaloes and antelopes of different kinds.

I comforted therefore myself with my hopes of having the opportunity to come back to this rich hunting ground in the future.