Change of Heart

Re
So my husband and I have been together since we were 18. We used to talk about baby names and both really liked the name Jack for a boy. Fast forward 6 years, and I don't think I like it very much but he still loves it. It would be Jack Gordon (Gordon is my father's middle name).  It's almost nostalgic for us, but now I'm not crazy about it. 
We agree on girl names, but boy names have always been a task. I want to incorporate Glen as a middle name, but can't think of a good first name. 
Thoughts on this predicament?