The Staghorn Cable Scarf is one of two patterns based on a square in a sampler afghan book my grandma gave me when I was a tiny human.

EDIT: Thanks to Oliverpenny for pointing out an error in row 9 (which will be corrected in the pattern itself when I get the chance)
Instead of:
Row 9: P1, K3, P1, K4, BC, K4, FC, K2, P1, K3, P1
it should be:
Row 9: P1, K3, P1, K4, BC, FC, K4, P1, K3, P1