Blood Red Horse-interesting stuff

In this book "Blood Red Horse"
it happen a lot of interesting things, and the first one is:
How Gavin tell someone about Will's bad things.
When William was riding his horse, and Gavin told everybody
his horse was like a pony, so that means William was riding a pony.
And the other one is after that, Gavin throw William's lovely horse
to the castle's moat. And then William was get more angry for Gavin.
For First Sir Thomas, he move to the north of England,
at that time, the King of England was call " King Rachard"
And I think First Sir Thomas was mighty, because in this book
the book describe First Sir Thomas was like an old man.
But After that, the book continue say at the middle ages,
when the people have war with another country, the people
who live in north part of England, at that time, they don't have
their own house, so they have to build the house by themselves.
But they don't have time, because they all spend the time on war.
So First Sir Thomas help them to build all the house during the war time.

So that's what I read so far, Hope you understand :)