Swagman. The Guardians of Time, #1

What if Waltzing Matilda's Swagman didn't die when he jumped into the lake? What if he ended up in medieval England embroiled in a plot to set a new king on the throne? For once in his life Swagman John is lost for words. Accused of stealing the lamb he rescued fears being thrown in jail. But instead of protesting his innocence he backs into the waters of the billabong and falls. Certain he is dead, John cannot believe the lamb when he tells him he has been brought through a time and space portal to Medieval England.
When Mistress Barabal and Squire Stanislaus stumble upon John in the New Forest he is taken back to Winchester Castle where he actually finds the King has been killed and his brother Prince Henry is about preparing to take his place and his new friends are assisting him.  Suddenly talking lambs are the least of his worries. Caught up in political intrigues he does not fully understand, John finds dungeons and magic are not just for fairy tales, and that there are people prepared to go to great lengths to see William the Conquerer's other son crowned king-even as far as murder.
Just as John wonders if going to prison for stealing sheep was not a better option all along, he finds there is an even more sinister foe meddling in with history. Against such odds how can John set history straight so he can return home to his family?