Background
Ellerker was born at Hart, near Hartlepool, County Durham, on 21 September 1738, entered the Society of Jesus in 1755, and in due course became a professed father.
Ellerker was born at Hart, near Hartlepool, County Durham, on 21 September 1738, entered the Society of Jesus in 1755, and in due course became a professed father.
When the order was suppressed in 1773 he accompanied his fellow Jesuits to Liège, and thence emigrated with the community in 1794 to Stonyhurst, Lancashire, where he died on 1 May 1795.