Background
He was born in Parramatta to James and Frances Byrnes. His father was a member of the New South Wales Corps.
He was born in Parramatta to James and Frances Byrnes. His father was a member of the New South Wales Corps.
In the 1840s the brothers ran a flour mill, and they continued to run mills and stores thereafter.
Byrnes was a member of the New South Wales Legislative Council from August 1858 to May 1861 and from September 1861 until his death at Parramatta in October 1891.