[6] As Protector, he lived at Piltawodli mission and camp for some years, working closely with the German missionaries, Christian Teichelmann and Clamor Schürmann (and later Samuel Klose), who learned and taught in the Kaurna language.
The Aboriginal students proved to be every bit as bright and teachable as their white contemporaries,[8] but their number remained small and Moorhouse re-purposed the schoolhouse as temporary accommodation for the Irish orphan girls who arrived in June 1849.
The settlers opened fire on the Barkindji before they were within spear-throwing range, claiming at least 35 killed and 16 injured, though Aboriginal oral tradition suggests this is a conservative figure.
[11][12] Moorhouse's official account which was sent to the Governor of South Australia, George Grey claims that "the result was, to the natives, the death of nearly 30, about 10 wounded, and four (one adult male, one boy, and two females) taken prisoners".
[13] In January 1855 Moorhouse had the duties of comptroller of the Destitute Poor Establishment, and superintendent of the Female Immigrant Depot added to his responsibilities as Protector of Aborigines.