Name's the Same: Henry James Alden is named after his grandfather, and in the first book uses his first two names as a pseudonym — it doesn't help them hide from the grandfather.
Before the ice is broken, the grandfather is introduced as "Mr. Henry". He's far more successful.
Outlived Its Creator: The Boxcar Children series had only 19 books by its original creator, Gertrude Chandler Warner. Then, over a decade after her death, Albert Whitman of Albert Whitman & Company resurrected the series, producing over 100 more books due to reinterest (including a kid-friendly cookbook). Unsurprisingly, after Warner stopped writing them, continuity went right out the window. Notably, a couple pets introduced in her later books suddenly disappear, and sadly the storytelling quality does, too.