His parents returned to Scotland when slavery was made illegal, and Peterswald's education continued at the Military Academy, Edinburgh, and Elizabeth College at Saint Peter Port, Guernsey,[1] where he commanded the 1st Rifle Company attached to the Channel Islands Militia.

[2] He ran a dairy farm at Munno Para for seven years without success, but the voluntary militia company which he raised and commanded was noted for its smartness.

[4] Once again the vacancy was filled from outside the police force, this time by T. W. Bee, previously Relieving Officer with the Adelaide Destitute Asylum.

As a particular challenge, the police under his leadership established law and order between both European settlers/pastoralists and indigenous communities as the frontier of modernity expanded throughout the vast distances of Central Australia and the Northern Territory.

Public economic distress and unemployment during the 1880s and early 1890s presented the police with their first experiences of serious industrial unrest, all of which Peterswald handled with firm impartiality.

Croix, Greffier of the Island of Jersey, died 19 April 1916 at her residence on Buxton Street, North Adelaide, also named "St Heliers".