Agravain, Gaheris, Gareth, and Gawain
These brothers(shown above) were the sons Lot and Morgause.
Agravain: He was never married, but he was in love with his mom. He was a knight of King Arthur; however he despised his king.
Gaheris: He was married to Lyonors. They didn't have any children together, for he lived a short life. He was killed by Lancelot when he was serving King Arthur as a knight.
Gawain: He was never married because he had trouble with women. He was also a knight of King Arthur.
Gareth: He was married to Lyonesse with no children together. He too was a knight of King Arthur.
Agravain: He was never married, but he was in love with his mom. He was a knight of King Arthur; however he despised his king.
Gaheris: He was married to Lyonors. They didn't have any children together, for he lived a short life. He was killed by Lancelot when he was serving King Arthur as a knight.
Gawain: He was never married because he had trouble with women. He was also a knight of King Arthur.
Gareth: He was married to Lyonesse with no children together. He too was a knight of King Arthur.