If You Like Ranger's Apprentice

Washed up on the shores of ancient Wales, the boy had no home, no memory, and no name…
He was determined to find all three.

Under the wing of the mysterious Branwen, who claims to be his mother, the nameless boy learns the lore of such ancient peoples as the Celts and the Druids. But to discover his identity and the secret of his own powers, he must escape to the mist-shrouded isle of Fincayra, an enchanted land between earth...

In the beginning, there was the Namsara: the child of sky and spirit, who carried love and laughter wherever he went. But where there is light, there must be darkness -- and so there was also the Iskari. The child of blood and moonlight. The destroyer. The death-bringer. These are the legends that Asha, daughter of the king of Firgaard, has grown up learning in hushed whispers, drawn to the forbidden figures of the past. But it isn't until she becomes...

In the late 1100s, thirteen-year-old Will, the future Lord of Shackley, is exiled to Sherwood Forest, where he meets Robin Hood and the Merry Men and bands with them to try retake Shackley Castle.

After Jack becomes apprenticed to a Druid bard, he and his little sister Lucy are captured by Viking Berserkers and taken to the home of King Ivar the Boneless and his half-troll queen, leading Jack to undertake a vital quest to Jotunheim, home of the trolls.

Twelve gave up her name and identity to train in the art of hunting them--so she says. The truth is much more deadly: she trains to take revenge on those who took her family from her. But when Twelve's new home is attacked, she'll find herself on an unexpected journey, where her hidden past is inescapably intertwined with her destiny--and the very fate of her world.

An evil force has been awakened from years of sleep and it is up to fourteen-year-old Edmund, an aspiring sorcerer, and his friends to stop it.

"Adelina Amouteru survived the blood fever, a deadly illness that killed many, but left others with strange markings and supernatural powers. Cast out by her family, Adelina joins the secret society of the Young Elites and discovers her own dangerous abilities"--

In 1210 Scotland, when invading knights capture 12-year-old Drest's father, the Mad Wolf of the North, and her beloved brothers who make up his fearsome war-band, she sets off to rescue them from the castle prison, taking along a wounded knight as her captive to trade for her family's freedom.

"In a medieval world where the ruling houses are based on the constellations, betrayal, intrigue, and a king's murder force the royal sisters of the Bear House on the run"--

In the country of Carthya, a devious nobleman engages four orphans in a brutal competition to be selected to impersonate the king's long-missing son in an effort to avoid a civil war.