I was careful to name my sons after men. I am named after 2 women, two of my great-grandmothers (Bubby Just and Bubby Having Fun), but my sisters are named after men (same initial, American style).
My sons: One has 1 name because the person had 1 name. The other has 2 names because I added a name; the person after whom he is named passed away young. So it is the same name, but it isn’t. You can change a person’s mazel with a changed name.