Re: What do you think of these boy names?
I'm not keen on Gregory, but I like Gregor a lot. Heinrich is OK, from a different naming system so I wouldn't consider using it; within its own parameters, I prefer just Hein.
I'd expect boys named Florian, Ira and Junius to experience a lot of teasing. Florian is too floral, Ira ends in fem -a and resembles Ida, and Junius would shorten to June and also get confused with Julius.
Marlon isn't part of my naming system: I'd assume a Marlon was from the USA. Like Brando? I don't like anything about it.