He succeeded his father in 1154 as Seigneur de Fougères. "…Radulfo de Filgeriis…" witnessed the charter dated to 1155 or before under which "Conanus dux Britannie et comes Richemundie" donated "ecclesiam de Gaituna" to Kirkstead Abbey. "Radulfus Filgeriensis dominus" founded Rillé abbey, confirming donations made by "Aufredus de Filgeriis et Maino proavus meus et Aaledis uxor sua et Radulfus avus meus...Henricus pater meus" to Fougères, with the consent of “fratribus meis Frangalo et Guillermo”, by undated charter, which also records a donation made by “Oliva mater mea”. "Radulfus, Filgeriarum dominus, Henrici Filgeriensis domini filius" granted property to "Roberto aurifabro de Kuetehou" for a factory by undated charter, witnessed by "W. de Filgeriis fratre meo, Herveio de Vitreio…".
He captured Eudes de Porhoët, regent of Brittany, in 1155 which brought Conan IV Duke of Brittany to power. "Radulfus Fulgeriensis dominus et fratres mei Fransgalo et Guillelmus et Robertus et filii mei Juhelli et Guillelmus" donated property to Sauvigny by charter dated 1163.
He opposed Henry II King of England in Brittany, for which he lost his English revenues between 1166 and 1173. King Henry destroyed the castle of Fougères, which Raoul rebuilt in 1173. The Annales Cestrienses record in 1173 that “Henricus tertius Rex Anglie filius Henrici Regis Anglie” captured “patrem suum” with the help of “duobus comitibus Anglie...Hugone comite Cestrensi et Roberto comite Leicestrie”, adding that “Hugo comes Cestrie” was captured “apud Dol in Britanniam...cum Radulpho de Feugis”.
He was seneschal of Brittany under King Henry's son Duke Geoffroy. "Alanus vicecomes de Rohan…cum uxore mea Constantia" founded the abbey of Bon-Repos by charter dated 23 Jun 1184, witnessed by "Radulphi Filgeriarum domni…Hamelino de Meduana…Herveio de Vitreio…". "Radulfo de Filgeriis, Allano de Rohan, Rollando de Dinanno…" witnessed the charter dated to [1185/86] under which "Gaufridus Henrici regis filius, dux Britannie, comes Richemont" confirmed the donations to the abbey of Pont-Pillard by its founders "Rollando et Allano de Dinanno".
Matthew of Paris records the death at Acre in 1191 of "Randulfus de Fulgeres", which is contradicted by the Chronicon Savigniacensis Monasterii which records the death "XVII Kal Jun" in 1194 of "Radulfus de Filgeriis apud Savigneium".
Married Mathilde, daughter of ---. Domesday Descendants suggests that she was the possible daughter of Juhaël de Mayenne, presumably based only on her giving this name to her eldest son. She is named in her husband's charter for Missenden Abbey. 1
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