Earl and Carl Grubbs were Naima Coltrane's nephews. They sat in with Trane when he was in Philly. They had a group called The Visitors and released a couple of albums in the 70's. As far as I know Carl is still alive, playing and teaching. Earl died in 1989. That's all I can find about him. Does anyone have more info to add? Did he play or record with anyone after The Visitors?