Roger Vane was a United States senator from New York and a secret member of HYDRA.
Vane was a senator of the United States, born and raised into a wealthy family with ties to HYDRA. Through doing business with Byron Frost, he met his adoptive daughter Whitney, and the two eventually fell in love, with Whitney accepting his proposal.
This all ended when Vane became aware of Whitney's true parentage, that of Maggia leader Luchino Nefaria. Roger threatened to expose both her real father and her to the United States government, while also exposing them both to HYDRA.
Whitney didn't see Vane until the conflict between the Maggia and HYDRA years later, killing him with a shot to the head.