Martha Jones

Martha Jones first met the Doctor in the episode Smith and Jones as she walks to work and he pulls his tie off.She is enganged to Tom Milligan and works for UNIT(The Sontaran Strategem)

Dr.Martha Jones

Family
Martha's family is Mum Francine Jones,Dad Clive Jones,Sister Tish Jones and brother Leo Jones

Character Development
Throughout Doctor Who series three, Martha pined for the Doctor's affection. In its final story — "Last of the Time Lords", Martha was separated from the Doctor for a year, and after saving the world she decided to return to Earth to allow herself to qualify as a medical doctor and get over her crush on the Doctor. Following the airdate of "Last of the Time Lords", the BBC announced that the character would return to screens in three episodes of Torchwood Series 2, before rejoining David Tennant's Tenth Doctor alongside new companion Donna Noble (Catherine Tate) for five episodes in the fourth series of Doctor Who. Appearing in Torchwood, it is explained through exposition that Martha is a medical specialist for UNIT, a qualified doctor and bona fide expert on alien life. First appearing on the spin-off series in Torchwood episode "Reset", fellow companion Jack Harkness establishes Martha's credibility to her new peers, slyly commenting upon her vast experience. In the same episode, Martha notes that an "impeccable source" recommended her employment to UNIT, implying the Doctor holds the highest level of faith in Martha's capability. Seeing Martha in action with UNIT in "The Sontaran Stratagem", Donna reacts with shock asking derisively if the Doctor turns all of his companions into "soldiers".

Life with the Doctor
In the episode "The Shakespeare Code", Martha wonders if she is safe in an era before emancipation, but the Doctor is blasé, pointing out that he's not even human – when she prompts: "[I'm] not exactly white, if you hadn't noticed", he is nonplussed, ethnicity being irrelevant to him. Martha soon reacts with surprise and possible offence to Shakespeare's use of Elizabethan terms for black people such as "blackamoor" and "ethiop". For a moment, she thinks these terms could be racist (the Doctor quips that it is "political correctness gone mad"), but realises Shakespeare is actually enamoured of her. At the end of the episode, he refers to her as his "Dark Lady" – to whom the real Shakespeare dedicated a number of his sonnets. Other episodes such as "Human Nature"/"The Family of Blood", set in 1913, depict the racism that Martha encounters in different eras – here, public school boys exhibit casual bigotry, which she is forced to rise above, and even decent people are seen to be products of their time.

When the TARDIS crew are nationally branded as terrorists in "The Sound of Drums", the Master says that the Doctor's current companions "tick every demographic box" – referring to Martha's ethnicity and Jack's orientation. He later refers to Jack and Martha as "the girlie and the freak", adding to the insult by claiming he is not sure which is which.