My parents, having already had a small girl as an addition to the family, were expecting a second. They had already chosen a name - "Marion". (The same as John Wayne's real name).
I then turned out to be horribly masculine. Marion wasn't going to cut it.
They looked through the "Radio Times" for a name and happened across Raymond Glendenning.
https://en.wikipedia.org/wiki/Raymond_Glendenning
Thus was I named......
All the other names I have come from other family members......