Juwayn b. Malik
Juwayn b. Malik b. Qays al-Taymi (or al-Tamimi) (Arabic: جُوَین بن مالِک بن قَیس التَیمی) was martyred in the Battle of Karbala. His name was mentioned in sources either as Juwayr b. Malik or Huway b. Malik. Some other reports have mistaken him for Jawn, servant of Abu Dhar.
Battle of Karbala
As a member of 'Umar b. Sa'd army, he came to Karbala to fight with Imam Hussain. However, when he saw that Ibn Ziyad did not accept the suggestion of Imam Hussain and they engaged in a war, he joined Imam at night with some people of his tribe. They have been mentioned as seven people. He was martyred in the first attack of the army of Ibn Sa'd on the Day of Ashura.
His name has been mentioned in Ziyara al-Shuhada, "Peace be upon Juwayn b. Malik al-Duba'i."