These reimagined biographies are sometimes called semi-biographical novels, to distinguish the relative historicity of the work from other biographical novels The genre rose to prominence in the 1930s with best-selling works by authors such as Robert Graves, Thomas Mann, Irving Stone and Lion Feuchtwanger.
[1] Some biographical novels bearing only superficial resemblance to the historical novels or introducing elements of other genres that supersede the retelling of the historical narrative, for example Abraham Lincoln, Vampire Hunter follows the plot devices of a vampire fiction closely.
Some novels that are known best for their fictional prowess, but include extensive biographical information that is less obvious to readers.
A very good example of this kind is Goldsmith's The Vicar of Wakefield, believed to be the biography of a person the author had known and observed very closely.
Of course, sometimes these changes become too much and, for example, a negative character is reversed and some kind of historical distortion occurs.