When someone says "He's my namesake," I think...
the speaker was named after the person referred to by "He."
4(23.5%)
the person referred to by "He" was named after the speaker.
5(29.4%)
could be either
1(5.9%)
could be either, but more likely (a) than (b)
2(11.8%)
could be either, but more likely (b) than (a)
4(23.5%)
"Hunh??"
1(5.9%)