Genealogiciæ Scriptoris Fusniacensis names 'Lebaldus de Malla et…Iveta comitissa de Retest' as brother and sister of 'Ebalus de Roceio', this note also refers to a certain Mathilde, wife of Liéutad: 'Albericus de Cociaco…cum Adela uxore sua et matre eius Mathilde' who made a donation to the Abbey of Nogent-sous-Coucy (French Wikipedia) in 1059.