Okay, the one I wanted to do doesn't work, but I came up with this instead:
A sister to a brother
A husband to a wife
A daughter to a father
A brother to a sister
A mother to a son
A husband to the first
A chain of six who never met,
But who died first?
No Hobbits are involved in the answer, so don't say I never do anything nice for you.
hS