Married Susannah Norris (b Abt. 1852) in 1870. No locations at this stage unfortunately :( although I presume UK/Australia. Have Isaac's father listed as James Cook (not the explorer).
Their (known) children to me are:
Isaac John Cook 1874 Orange, NSW, Australia
Albert Stephen Cook 1877 Orange, NSW, Australia, d 1925
married Florence Victoria Hall (b 1886, Dubbo, NSW) on 21 July 1909, Dubbo. Florence was the daughter of Albert Henry Hall and Ellen Evans.
Looking for any more info, rellies, etc. Dates for Isaac and Susannah, James and beyond.
Appreciate any connection!