Hi,
Wikipedia tells me that 1356 belongs in the Grail Quest series, but it's not listed there...
Licensing The Last Kingdom to Netflix was a good step -- they are doing a good job with it. I have enjoyed the first year of the series, and I am now picking up the Grail Quest series.
Alan
But 1356 is not part of The Grail Quest series; it just happens to share a character, Thomas of Hookton.