There's a fairly lengthy article in the Penrith Observer, 13 Feb 1923 re. the institution of the Rev. Frederick Oswald Alnwick to the Rectory of Threlkeld. It includes
"Inside the Church, above the entrance to the vestry, is a marble monument to "The Rev. Thomas Edmundson, Vicar of Rodmersham, Kent and Curate of Threlkeld, who died Oct 5th 1797, aged 79 years". The marble also contains the memory of Edmundson's wife, Jane, who survived him until 1818, and their son Isaac, who was a merchant at Baltimore, South America".