sentences:  Jonny was a very religious man who belonged to the Lutheran congregation in Balaklava.It is said that he was one of the first to develop the stump-jump plough (a labour saving device to remove mallee tree stumps), for which he was awarded a medal for exhibiting it at the Port Wakefield Agricultural and Horticultural Society in 1885.Others, like Smith from Maitland, South Australia patented the invention.