She married John Manners in about 1563.
He named it after John Manners, 3rd Duke of Rutland.
In the novel, neither Dorothy Vernon nor John Manners has any siblings.
Also, John Manners' father is alive.
Manners died in 1641, and his titles were passed to his second cousin, John Manners.
Dorothy reminds her father that she loves John Manners.
She was the wife of John Manners.
The city is named after John Manners, Marquess of Granby.
His son, another John Manners, was made 1st Duke of Rutland in 1703.
It was the home of Dorothy Vernon and John Manners.