Just FYI there is some ambiguity over whether to use <br> or <br/>
They both produce the same result.
See this general article for a discussion of the difference in HTML. That says that <br/> is somewhat preferred.
But the WikiTree Help page on formatting says to use <br>. However that is contradicted by this other WikiTree Help page on recommended tags which says to use <br />.
In my experience most people on WikiTree seem to use <br/>.
So... I guess you can use either. Personally I always use <br/>