I believe this was my great great great grandfather William James Brooksby. He brought his wife and 10 children to the US around that time. I didn't know the exact date because he came to the US without his family, and a short time later traveled back to Australia to ask his family to come with him. They did arrive in Seattle, and traveled by train to Utah, and settled in Fredonia, Arizona. Do you have a source I could look up, or an image of the record you could send me?