Can I use this name??

Jessica

Hello! My husband and I have been trying for about 6 years and are now expecting October 2025! We have had a name that we have loved and wanted to use. His cousin just had a baby last year and used the name. The name is Eleanor with a nickname of Ellie. We only see them once a year. Should I approach the cousin and ask if it is okay? The middle and last name will be different. If we can’t use that name we also like Maggie, but aren’t big fans of Margaret. Any other suggests for a formal name? Thank you to everyone for any input!!

Jessica