1. What is the mother name of yazid?
2. still we din't received any fatwa to call (RA) for mavi'a and abu sufiyan then now hw
We called yazid?

Salaam,

I am not sure I understood your second question,but here are links regarding the subject "Yazid ibn Mu`awiyyah ibn Abi Sufyan ibn Harb ibn Umayyah Al-Umawi Al-Dimashqi"

Yazid ibn Mu`ayyiah in Focus - IslamonLine.net - Ask The Scholar
Imam Hussain's going against Yazid, and the Sunni view on Yazid. Can we curse him?

Wa salaam