First of all Imam Hasan (R.A) did not die in the war of Karbala. He died in Medina before the karbala incident.
Imam Hussein (R.A) was martyred with his companions in the battle of Karbala on the 10th of Muharram year 61 AH (AD 680).
Imam Hussein (R.A) was beheaded by Shimr ibn'e Dhiljawshan (the army of Yazid ibn'e Muawiyah) that caused his martyrdom.
Hassan Aziz Hassan died in 2000.
King Hassan II of Morocco died on July 23, 1999 at the age of 70.
imam Ali died to save the Islam's. he went to prove that he well never give up?? he was married to Zahara and his kids are imam AL Hussein, imam AL hussan, and zainab is the last child..IF YOU WENT TO KNOW MORE ABOUT ISLAM JUST SEE YOUR MUSLIM FRIEND AND TELL HER/HIM WHO IS IMAM ALI THATS IF U WENT TO KNOW ABOUT THEM..THXS**** REYAM ****
Hassan Hassanein died in 1957.
Hassan Heshmat died in 2006.
Hassan Hathout died in 2009.
Walid Hassan died in 2006.
Hassan Tuhami died in 2009.
Khalid Hassan died in 2007.
Hassan Khaled died in 1989.
Hassan Mutlak died in 1990.
Hassan Kobeissi died in 2006.