Which tense is correct? "Bob wanted to know if he is/was a father"
Solution 1:
Was
You're talking about an event in the past since "wanted" is in the past. Three years ago is not the present, so "is" can't be used. It's that simple.
Was
You're talking about an event in the past since "wanted" is in the past. Three years ago is not the present, so "is" can't be used. It's that simple.