Alexander McArthur was born on 10 March 1814 in
Enniskillen, Ireland, to
Wesleyan minister John McArthur and Sarah McArthur . He was privately educated and, in 1830, was apprenticed to a merchant in
Omagh. After being struck by severe fevers, McArthur arrived at
Sydney on 24 January 1842. He began business with a
consignment from his brother
William before becoming partners with William Little and James H. Atkinson and returning to Ireland in 1848, where he founded the softgood merchants W. and A. McArthur & Co. in 1850. Returning to Sydney the following year, McArthur worked as a
shipping agent and profited greatly from gold exports. W. and A. McArthur built a large warehouse in the city and opened branches in
Adelaide,
Melbourne,
Brisbane and
Auckland. the eldest of which was the British politician
William Alexander McArthur. After visiting England 1854–55, McArthur served on the
Sydney Chamber of Commerce, as director of many building societies and insurance and mining companies, and as
justice of the peace, and became a shareholder in the
Australian Joint Stock Bank. He was a devout Methodist and in 1843 he was elected to the committee of the Wesleyan Auxiliary Missionary Society of New South Wales. He was also treasurer of the
Young Men's Christian Association of Sydney and a committee member of the Benevolent Asylum, the New South Wales Auxiliary Bible Society and other charities. ==Political career==