ROBERT [I] de Rochecorbon, son of THIBAUT [I] Seigneur de Rochecorbon & his second wife Sybille d´Amboise (-after 1108). The Gesta Ambaziensium names "Eufemiam, Sibillam et Elisabeth" as the three daughters of Lisois & his wife, specifying that Sibylle married "Theobaldus filius Corbonis" by whom she had "Robertum de Rupibus"[836]. Seigneur de Rochecorbon. "Fulco comes Andegavensis, Sigelranus constabularius eius, Robertus de Rupibus, Gauzbertus de Calvimonte præpositus" signed the undated charter which records the consecration of the church of Marmoutier by Pope Urban II[837]. Pope Urban is recorded in Tours in early Mar 1096 (N.S.) from where he addressed letters dated 4, 14, 20, 21 and 24 Mar 1096[838]. A charter dated 1108 records a dispute between "Robertum de Rupibus" and Marmoutier relating to the sale of wine, witnessed by "Petrus de Calvimonte, Gaufridus de Malliaco, Odo filius eius, Magentia, uxor Roberti, Tetbaldus, Robertus, Sulpicius, Guanilo, Sybilla et Lucia, filii et filiæ Roberti de Rupibus, Gaufridus filius Drogonis, frater eorum ex matre, se prius Drogoni desponsata"[839].
m as her second husband, MAYENCE, widow of DREUX, daughter of --- (-after 1108). "…Magentia, uxor Roberti, Tetbaldus, Robertus, Sulpicius, Guanilo, Sybilla et Lucia, filii et filiæ Roberti de Rupibus, Gaufridus filius Drogonis, frater eorum ex matre, se prius Drogoni desponsata" witnessed the charter dated 1108 which records a dispute between "Robertum de Rupibus" and Marmoutier relating to the sale of wine[840].
Robert & his wife had six children