a lot of my favourite names were vetoed by dh.
Then another 2 were used by my brother (he didn't know I liked them)
We just kept trawling through books til we found ones we liked.
Dh was hopeless, he could say yes or no to me but he didn't like doing books and didn't have many suggestions.
I was told on Friday I would be induced on Monday, and it was a girl. So we needed to chose a name. We sat up in bed over the weekend, him reading, me with a name book. I went through slowly and suggested ones I liked.
Suddenly he said - I like that! and we thought about it for a few momments and both went YES! (it begins with an L so we had gone through a lot of the alphabet!)
It was easier in that we did have some parameters. He is Dutch and flowers names were a no-no as were things like Grace. (that is an adjective not a name according to him!)
It had to avoid certain sounds, no th, no g, and it had to be pronounceable in Dutch, English and Russian. That ruled quite a few favourites out as well. Bethany, and Abigail were on my list!
So I would ask him when is a good time to do it, and then go through a top 10. Let him have a yes/no/maybe on that. Then a few days later suggest another top 10, and so on, until you have a short list.
try the names out round the house, and with your surname and other dcs names
Do have a girls name in reserve, just in case it is a girl!