Hi to all on this search.
All of you are trying to piece together David Keddie, who travelled to Australia on board the "Negotiator" in 1857, and his family and ancestors etc.
His parents were Thomas Keddie and Christina Brown, married in 1822. David was born on 16th April 1825 in Ceres, Fife. He travelled to Australia with his uncle, John Keddie (born 1800) and John's second wife Margaret Herd and the 5 youngest of John's children from his first marriage to Janet Ritchie. John and Janet had 10 children in all.
When David went to Australia he left behind in Fife a son John (born 1854) he had to Mary Paton (they were never married). Its a long story. John was brought up by Thomas Keddie, his grandfather, and his second wife Elizabeth Kirk. (Mary Paton died in 1859).
Young John later married Elizabeth Angus in 1894. Elizabeth Angus had 3 sons prior to marrying John and they later had one daughter and 3 more boys when married. One of their boys was called David. This David was my grandfather. I was called after him.