Robert’s father came from Fovant in Wiltshire and held lands in Combe and Charlton by Donhead St. Mary in the same county, only a few miles from Shaftesbury. By 1351 he had married Margery Platel, whose father had founded a chantry at the altar of St. Nicholas in Shaftesbury abbey.
Fovent made a profitable first marriage. When Robert Herring died in September 1384, before attaining his majority, his sister Margaret, already married to Fovent, became heir to the extensive Herring estates in Dorset and to one third of the manor of Plumberrow in Hockley, Essex. She and her husband were granted seisin of the latter in November 1387.
