Simplify the following text for a Grade 8 native English-speaking person.
Original: Mansfield , originally known as Mount Battery , was at the boundary of a number of pastoral runs , and a township was surveyed in 1851 and named after Mansfield in Nottinghamshire , England .
Simplified: Mansfield , first known as Mount Battery , was at the boundary of a number of pastoral runs ( very large farms ) . A township was surveyed in 1851 and named after Mansfield in Nottinghamshire , England .