William Giles and Jane Best married 30 Aug 1874 in Canterbury. The image of the marriage certificate shows he is the son of Benjamin Giles and she is the daughter of Isabella Best. There is no father listed for her, however, witnesses to the marriage were James and Isabella Dray.
James Dray and Isabella Best married in the 4th quarter of 1854 in Greenwich, London, England, which means they were not married when Jane was born.