If my older child had febrile seizures should i expect my newborn to have them, too?

No: Although there is a higher incidence of febrile convulsions in children whose parents have had them it is more likely your child won't. Febrile convulsions are a scary but not dangerous condition.

No: I would not expect a newborn to have febrile seizures. Seizures with fever have their highest incidence in the 6 month to two year age group and usually subside by age 5. Having one child with febrile seizures will make you more aware as a parent for the nuances in the sibling. I agree they are scary but are not dangerous.

No, but...: If a sibling has experienced febrile seizures, it is more likely the other siblings will have them, but it is still a rather uncommon occurrence, and though it is scary to experience it should not be considered to be a sign of something ominous. Good luck!