Merlin is not the hero.
Blood of Ambrose is the first in a series written by James Enge. It’s an amusing sword and sorcery tale, which hints at Arthurian legend without being beholden to it. It concerns the defense of Uther’s kingdom from a usurper trying to steal it away from his descendant, in an alternate fantasy-world. Merlin’s children are at the forefront.
It’s a fun romp, and worth reading if you don’t want to think too hard about the real world for a little while.
And now, I will think a little too hard about this book. The biggest spoiler is a bit at the end that doesn’t have a big impact on the main plot.