Considered:
Peleg lived thirty years, and became the father of Reu;
Serug lived thirty years, and became the father of Nahor;
Shelah lived thirty years, and became the father of Eber;
Reu lived thirty-two years, and became the father of Serug;
Eber lived thirty-four years, and became the father of Peleg; -- Genesis 11
If we presume that these men's young wives had their first children in the first year or two of marriage, there really isn't much evidence for very early marriage of males in ancient Israel. Betrothals might have been quite early, but we don't know when consummation might really have occurred...except after the age of 30 appears to be par for the course.
What evidence is there that Jesus would have to have been married early?
Do you have a reason to consider it further? What does it change for you? What do you think it should change for anyone else?