The most common and most likely answer to this crossword clue is the 8 letter word FOREBEAR
I've seen this crossword clue in The Guardian
F
O
R
E
B
E
A
R
More clues leading to the result FOREBEAR
- One of an earlier generation to steer clear of reportedly
- Ancestor warning creature in woods
- Old family member shouted warning after driving over animal
- Ancestor’s warning on creature of the woods
- Ancestor’s robe, torn in agitation
- Relative who’s passed Spooner’s pig market
- Adversary going over Custer’s Last Stand for kinsman once
- Old relation in favour of European support
Buddy explains!

The straight part
We know that "Old relation" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case old relation = forebear.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does FOREBEAR mean?
FOREBEAR verb- To keep away from; to avoid; to abstain from.
- To refrain from proceeding; to pause; to delay.
- To refuse; to decline; to withsay; to unheed.
- To control oneself when provoked.
- An ancestor.