How does a son become II?

Answer 1

There is no legal ruling on this, but the following format is the one that is most commonly used. In all cases, the names must match exactly (that means first, middle, and last).

If a son has the same name as his father, that son is a Jr.

If a son has the same name as his grandfather or uncle, that son is a II.

If a son's father is a Jr. or a II, he is a III.

Sometimes II is used instead of Jr., but that is not common (and to some interpretations not correct).