What to name if I have a boy

OK so I have a 8 month old baby his name is Jakob Roy Sullivan.

I'm also pregnant with his brother or sister 😍 about 17 weeks, we find out whether it's a boy or girl on 27th May.

If it's a girl her name will be Sophia Elizabeth Sullivan

But we are stuck for a boy, I would like to ask all mama's papas whoever out there to help me find a name for out little one if he is a boy, it needs to be in tune with my first born name Jakob....any ideas people :) 😍😛😘

When we find out I will let everyone know and choose a name to go with 😄