It was by the act of the Houses that the Lancastrian line had been raised to the throne.
"History of the English People, Volume III (of 8)" by John Richard Green
Now, at length, there was an heir to the Lancastrian line.
"Margaret of Anjou" by Jacob Abbott
The kings of the Lancastrian line were apparently ready writers.
"Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1" by Various