Yes if you go to my tree I have tried to put in the siblings which as stated has helped me a lot. you might also want to know that as you have found the spelling may have changed, this would be okay as long as you have some idea if the family was English (Boone) or German (Bohn)and may have spilled over to France. My line is Bohn.
The other wild card I like when trying to find leads is to put only the last name in the search and use the DOB that you think you know then select the ten or twenty year span, and only have it search family trees and you have a better chance of coming up with siblings even if your relation is not listed with the family. this has worked for me on many occasions.
best of luck