Joan of Cornwall, who in 1283 received a grant from her half-brother Edmund, 2nd Earl of Cornwall in which she was called "sister".[23] Modbury was part of the Valletorts' feudal barony of Harberton and was granted to Sir Alexander Okeston, following his marriage to the Earl of Cornwall's mistress, Joan, widow of Ralph de Valletort, by Roger de Valletort, Ralph's brother.[24] The younger Joan married twice, firstly to Richard de Champernowne , by whom she had a son, Richard de Champernowne, and secondly, Sir Peter de Fishacre, of Combe Fishacre and Coleton Fishacre, Devon,[25] by whom she had no issue. Her childless half-brother Sir James Okeston made her son or grandson Richard de Champernowne his heir.