Peter O'Reilly was born on 
27 March 1827 in Ince, England, but raised in Ireland. After serving in the Irish civil service,
                     he was appointed a lieutenant in the revenue police, he was honourably discharged
                     in 
1857. O'Reilly left Ireland for 
British Columbia on 
5 February 1858 and arrived in 
Victoria via 
Panama in April. Upon his arrival, O'Reilly was appointed as stipendiary magistrate for
                     Langley District, but soon transferred to 
Hope in 
1859. In November of that year he became high sheriff of the colony, holding this position
                     until 
1866.
In 
1864 he was appointed chief gold commissioner. And in 
1866, O'Reilly was sent to the 
Columbia River, near present day Revelstoke where a large portion of gold was discovered, here he
                     was tasked with enforcement of the mining laws. Later, due to the union of 
Vancouver Island and 
British Columbia, O'Reilly's position as stipendiary magistrate changed, and in 
1867 he was appointed as a county court judge. Throughout these changes in his career, O'Reilly had continuously sat in the 
British Columbia Legislative Council from 
1863 until the colony joined Confederation in 
1871. In 
1880, O'Reilly served as 
Indian Reserve Commissioner;
 however, the reserves that he laid down in 
Metlakatla in 
1882 were heavily and reasonably disputed by the Indigenous population. He served in this
                     position for 18 years until his retirement at the age of 71 in 
1898. In his “declining years,” O'Reilly spent his time in his garden, visiting friends,
                     and attending church until his death from heart failure on 
3 September 1905.