Ingelmarius was a Norman knight of humble origins who served Roger I, the count of Sicily.
Unfortunately, Ingelmarius's loyalty to Roger slipped proportionally to his perceived increased standing.
Shortly after the wedding, Ingelmarius begun to construct defenses in Geraci from which to resist Roger while simultaneously convincing the town's citizens to support him instead.
In response, Roger immediately raised an army and marched to Geraci to invest it.
No more mention is made of Ingelmarius by Roger's contemporary biographer Geoffrey Malaterra.