Analysis of information sources in references of the Wikipedia article "Fugitive Doctor" in English language version.
I'll refrain from delving too deeply into what Jo Martin's "Impossible Doctor" means
Ruth and Lee, are in fact another Doctor and her companion
Ruth and Lee Clayton are two Time Lords
Lee had been her companion
Ruth and Lee, are in fact another Doctor and her companion
Lee had been her companion
Ruth and Lee Clayton are two Time Lords
I'll refrain from delving too deeply into what Jo Martin's "Impossible Doctor" means