In the feminine is LAURA. This days is an old fashion name. Was nor very common as well in my parents generation already and I'm over 50. It's a nice name. There is another name that can be confusing and itts very rare. LAURENTINA.
Names stat the same no matter what language, so Shannon -> Shannon
Lauren -> Lauren
the most similar name to Lauren in portuguese is Laura
It's the same.
Well, here in Brazil we have the name ''Laura''... perhaps this is the equivalent...
Louren?o >> Lawrence