(I wrote a careful reply to your question then lost it with a careless tap of my finger. This will not be so careful!) I think we established that Sisodorgue is a scrambled version of Six Dargs or Six Days Work.
The key baptism entry is for Nov. 20th 1802 at St John's Chapel when the Hodgsons brought 4 of their children to be "done" together. The parents are John Hodgson and Ann (nee Harrison) of Six Dargs and the children are John, 2nd son born 1795, Thomas 3rd son, William 4th son and Edward 5th son. Sorry, John's is the only d.o.b I have down.
The other name you are after, I imagine, is High Rigg (not Ridge). In the 1851 census the John who was born in 1795 and was now living in the Bishop Auckland area says he was born at Highrig. if you look at the map Stan posted showing Six Days Work and go in a line south west from that farm you will come to Middle Rigg and then High Rigg. I think there could be another High Rigg slightly further down the dale just to the south of Daddry Shield. Mag