Elrond, having arrived in Valinor at the end of the Third Age, goes to meet his mother, Elwing. Taking Maglor with him.
“Hmph. I suppose we can’t have him being beaten bloody on my doorstep.” Elwing said, unenthusiastically “Or killing someone.” Apparently Maglor was considered a random killer, like a biting dog. “Come in then, if you must.”
I suppose in date this is really post-Lord of the Rings, but it's Silmarillion again in focus and personalities.