William, son of William and Elisabeth (née Marshall) Danger, was born in 1816 in Cambridgeshire, England. In 1839 he married Catherine Duxson née Bradley, who was born about 1808, at Wisbech, Cambridgeshire. They had the following children in Newton, Cambridgeshire:
Stephen — born about 1840, married Lucy Ann Knight, died 1928 at Newtown
William — born about 1842, died 15 December 1899
Samuel — born 1846 at Newton Cambridgeshire, married Susannah Broughton on 22 April 1867 at Christ Church, Geelong, died 18 October 1880
Mary — born in 1846, married Charles Henry Smith, died in 1940
Elizabeth Catherine — born 11 March 1849, married Robert Ellis, died 22 May 1937 in Geelong
William died on 24 December 187l and was buried in the Church of England section of the Mount Moriac Cemetery. Catherine, who died on 1 June 1882 was buried next to him.
When son William, who was unmarried, died on 15 December 1899 aged 57 he left his estate to his surviving siblings, brother Stephen Danger of Geelong, and sisters Mary Smith of Geelong and Elizabeth Catherine Ellis of Germantown in equal parts.