Books like King Arthur & the Grail by Richard Cavendish

A 15th‑century English prose compilation by Sir Thomas Malory that assembles the legends of King Arthur, Guinevere, Lancelot, Merlin, and the Knights of the Round Table into a single, coherent narrative.

A lonely Celt druid finds more than he expected on a quest for the lost Grail of Avalon--a bewitching young Roman beauty. The Grail King (Druids of Avalon #2) by Joy Nash (Goodreads Author) 3.86 · Rating details · 214 ratings · 12 reviews All who dwell in Avalon possess the powers of the Old Ones. But only some are keepers of the Light. One among them has dared to call upon the Deep Magic, conjuring up a dark storm that bodes ill for the people of Britannia... The vision came upon him suddenly: a delicate Roman beauty materializing out of the swirling whiteness of the snow. Her appearance near his ruined Celtic village makes no sense, but when the trance leaves him, she remains, demanding that he use his Sight to help her find a stolen grail. The last thing Owein intends is to use his gifts for his enemy, yet something tells him this innocent lass has the power to heal his wounded heart.

After a reign plagued by drought, war, and plague, King Arthur discovers a Holy Grail that heals his wounds, but as a seductive, malevolent force threatens court, Arthur faces a perilous quest across magic realms to protect his kingdom and love.