 Thomas Reibey had been in service with the East India Company when he met his wife Mary Haydock . He formed a trading company in Sydney and named its building " Entally House " after a suburb of Calcutta , India . Trading also brought his sons , Thomas Haydock and James , to Tasmania in the early 19th century . By 1816 James owned land near Hadspen and he purchased more in the 1820s . Thomas Haydock and Mary , his mother , purchased 2 @,@ 630 acres ( 1 @,@ 064 ha ) in 1818 in the then District of Cornwall , encompassing the present day site of Entally , and Thomas Haydock built the initial house in 1819 . The original building was apparently a single storey structure , its two square towers arrayed with defensive musket slots . It has been significantly extended and surrounded by outbuildings since . When Thomas Haydock Reibey died in October 1842 his son , Thomas Reibey , inherited it along with 4 @,@ 000 acres ( 1 @,@ 620 ha ) of land and " The Oaks " , a property at nearby Carrick that now hosts the agricultural field days known as Agfest . 
