Who were the members of the English rock duo that released "Only One Woman," a song later covered by the Swedish band Alien?
Alien (band): Alien is a Swedish rock and metal band formed in Gothenburg in 1986 by guitarist Tony Borg and vocalist Jim Jidhed. Alien (band):  They are best known today for their single "Only One Woman", a cover of a Marbles song, and "Brave New Love", which was featured in the end credits of the 1988 remake of "The Blob". The Marbles (duo): The Marbles were an English rock duo that consisted of Graham Bonnet and Trevor Gordon, who operated between 1968 and 1969.
Graham Bonnet and Trevor Gordon