No, Marlo Thomas did not convert to Islam.
A muslim Lady should try to convert his husband's belive but, if she found him no willing to convert to the Islam she should leave her husband to his own and get separated from their Nikkah (It is my openion but I am not a Faqeeh nor Mufti but beliver in Islam). If I am wrong please let me see the right way.
yes dawud wharnsby did convert to islam
No he is not an Islamic convert.
yes he did convert
He did, but later converted out of Islam.
No, but you need to at least know the basics of Islam before you convert.
250000 or more than that people convert to Islam in Europe yearly.
No Islamic leader was forced to convert to Islam. It is a basic and explicit rule in Islam; per Quran; that no compulsion in religion.
Because Islam is the truest religion! :]
Sunni, by a large amount. The majority of those who convert to Islam convert to Sunni Islam as well. Sunni means 'sunnah', to follow the way of the Prophet Mohammad, peace and blessing be upon him. It is not a 'sect or branch', but a term people may use to refer to 'Islam' and following the teachings of the Prophet pbuh. Whereas Shiism is a sect, a branch off Islam.
No.