William Macarthur

William Macarthur
BornDecember 1800 
Died29 October 1882  (aged 81–82)
OccupationBotanist, politician, pastoralist, horse-breeder, land owner, magistrate, publican, breeder 
Parent(s)
RelativesEdward Macarthur, James Macarthur 
Position heldMember of the New South Wales Legislative Council (1849–1851), Member of the New South Wales Legislative Council (1851–1855), Member of the New South Wales Legislative Council (1864–1882) 

The Honourable Sir William Macarthur (December 1800 – 29 October 1882) was an Australian botanist and vigneron. He was one of the most active and influential horticulturists in Australia in the mid-to-late 19th century. Among the first viticulturists in Australia, Macarthur was a medal-winning wine-maker, as well as a respected amateur botanist and noted plant breeder.