Background
He was born in County Cork to British captain John Markham.
He was born in County Cork to British captain John Markham.
He migrated to Australia in the 1840s and became an auctioneer at Armidale and later police superintendent at Cooma. In 1860 he was elected to the New South Wales Legislative Assembly for New England, but he retired in 1862. Markham died at Cooma in 1864.