His family is not identified in contemporary documents. Recent research has proposed several hypotheses. On onomastic considerations, he might be a descendant of the Roger, Count of Le Mans in the early 8th century, and hence possibly of Robertian blood. Were this the case, he would have come from the same stock as his Rorgonid rivals, with whom he disputed the county of Maine. Christian Settipani identifies him with a count Roger who intervened in 892 to the aid of his "uncle" Hughes, count of Bourges, and suggests that this Hughes was his maternal uncle. This presence of names Hugh and Roger is reminiscent of the counts of Laon, and he could be the brother of Hugh, Count of Bassigny and uncle Roger I, Count of Laon.
Roger was married to Rothilde, daughter of the French king Charles the Bald, and was thus close to the royal family. In 885, Ragenold, Margrave of Neustria and Count of Maine was killed by the Normans. The surviving Rorgonids were teenagers, and King Charles the Fat preferred to entrust the march of Neustria to one of his followers, Henry of Franconia, and the county of Maine to Roger. As a consequence, the Rorgonids allied themselves with the Robertians and, after Odo became king of France, Roger was driven out of Le Mans in 893 and replaced by the Rorgonid Gauzlin II. Roger was restored as count in 895, but was particularly violent towards his subjects and the Church, drawing complaint from the Bishop of Le Mans. He died shortly afterwards.
With his wife Rothilde, daughter of Charles the Bald and Richilde of Provence, he had: