The Callahan Cavalry always shows up for one another—without question or hesitation.

The family is tight-knit, loyal, and not afraid to prank each other. But if anyone else messes with one of them, the Callahan Cavalry will come calling!

When you first meet their large family, it can be a lot. Each book in The Callahans will include a family tree that is current as of the start of that specific book.

Below is the Callahan Family Tree as of the beginning of Vivian's story in Letting Go. To avoid spoilers, this is the only family tree that will be included on the website.