Board Thread:General Discussion/@comment-108.44.85.110-20130806063343/@comment-10390252-20130806084058

If Glynda has any resemblanct to McGonnagall, it's the young, freshly-graduated McGonnagall who (in my head-canon) fought alongside Dumbledore in the Grindelwald War and, just maybe, fell in love with him (although he was, as is well known, incapable of reciprocating).

That resemblance alone might be the source of the slowly growing Ozpin/Glynda ship movement.