Make an effort to find your ancestry (6)
I believe the answer is:
strain
This clue might be a double definition.
'make an effort' is the first definition.
(I've seen this before)
'ancestry' is the second definition.
(strain is a kind of ancestry)
'to find your' acts as a link.
This may not be right. Some or all of it may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for strain that I've seen before include "Injure (a muscle); distinct breed" , "'Stress, tension (6)'" , "Race" , "Overtired" , "Filter - intense effort" .)