Lancelot's Disciple - Richard Gartee

Frith and Alura are brother and sister who discovered Sir Lancelot living as a hermit in Lancelot’s Grail. Together they uncovered his knowledge of the Holy Grail, and trained as his disciples. Now their story continues in this compelling sequel.
When Lancelot’s spiritual mantel consecrates Alura, Frith is left wondering why the same didn’t happen to him. As she becomes established in her seat of Self, Frith resigns himself to remain at the abbey and watch over his sister.
Then, Jacob, a Jewish merchant sent by their father, comes to take Frith on a journey along the ancient Silk Road. A reluctant Frith leaves the Christian abbey he has always called home to sail with Jacob to the Mediterranean city of Tyre.
With four knights for protection, the men caravan to Samarkand, the Central Asian capital of the silk trade. There they meet the Sultan, a wealthy collector of Oriental holy men.
Frith is invited to study at the Sultan’s newly formed mystery school, where he is tutored by a Taoist, a Buddhist, and a Hindu Swami. Overwhelmed by metaphysical experiences he receives from them, Frith becomes nearly catatonic during the journey home, causing Jacob to consider revealing hidden Jewish mysticism to set Frith right.
Once back in Britain, Frith must sort out his confusion, attain the Holy Grail, and reconnect with his saintly sister waiting at the abbey.