Was Hammer studios influenced by Solomon Kane with Captain Kronos vampire hunter ?
I think it was the other way around. SOLOMON KANE originated as a hardback book fictional historical character back in the 1930s. CAPTAIN KRONOS came out around 1974, Hammer Studios, as a possible progenitor of a series of Captain Kronos vampire hunter movies. The timing was bad for Captain Kronos as the vampire genre had run its course in film and would not be resurrected in widespread popularity until the TWILIGHT franchise in 2009, although individual vampire flicks would surface before then on tv and rental video films.
Hammer Films wanted to create a dashingly handsome, sexy but not puritanical James Bond/Wild Wild West secret agent, mid-18th century hero who used brains, cunning, logic and reason in conjunction with outstanding fencing skills with a Japanese samurai katana sword. His handsomeness and male sexual charisma were to be deliberately offset by a paternal-like, older man distinguished by a hunchback, who served as his partner assistant and provided a wealth of experience and technical knowledge, a la, Artemis Gordon from, 'Wild Wild West'.
I think Horst Jansen was okay and did a good job but I think he was a little too much on the pretty boy side. A somewhat darker character, like British actor, Richard Grant from, "Warlock", would have been better.