In his 1952 book "Devon", W. G. Hoskins writes in the section about Winkleigh:
"Court Castle seems to have been a small Norman castle-site. At the south west end of Castle Street, is a smaller mount known as Croft Castle, which probably served a similar purpose. The buildings may have been fortified manor houses rather than true castles." Philip David says that Croft Castle, may have been built some time in the 11th century in opposition to Court Castle.
You can find out more about Croft Castle by paying a visit to Philip Davis's wonderful Castle site:
The Landranger grid reference for this castle is: SS63060803