There's no single direct equivalent (as there is for David and Solomon, for example).
Etymologically, the name William means "determined protector;" so based upon that, a couple of likely Hebrew equivalents could be Shemarya or Gavriel.
Interestingly, of the Jews landing on Ellis Island in the early 1900s who wanted to adopt English names, no fewer than 97% of those named Zev (Ze'ev, meaning Wolf) chose the new name of William. So therefore Zev (Ze'ev) is another likely choice.
no
If, as has been variously reported, William Levy's father, or just his maternal grandfather, are/were Jewish, then William Levy is not Jewish. In order to be Jewish, one must either be born from a Jewish woman (i.e., a woman who either was born Jewish, or who converted) or convert, or ). You cannot inherit Judaism from your father.
It can be a Jewish name, but as in most Jewish surnames, it can also be a non-Jewish name.
he is Jewish
Yes, he was.
Yes, he is.
Goldston can be a Jewish name, but is not always a Jewish name.
Yes, he is Jewish. His middle name is Julius.
William Clay Ford is married to Lisa Ford. There is not any information online as to whether she is Jewish or not.
The web address of the William Breman Jewish Heritage is: http://www.thebreman.org
Although it is not a Jewish surname in its origin, any name can be a Jewish name if it is the name of a Jewish person
He's Jewish, but married non-Jewish women, so probably not.