Translations for personal in French

Here are paragraphs from public domain books translated:
“I have no definite knowledge, mademoiselle,” I replied, “but can not we, ourselves, investigate the mystery quite as well as the detective Ganimard, the personal enemy of Arsene Lupin?” — Je ne sais rien de précis, mademoiselle, lui répondis-je, mais est-il impossible de conduire nous-mêmes notre enquête, tout aussi bien que le ferait le vieux Ganimard, l’ennemi personnel d’Arsène Lupin ?
The Extraordinary Adventures of Arsene Lupin, Gentleman Burglar, by Maurice Leblanc Arsène Lupin gentleman-cambrioleur, de Maurice Leblanc
“The circumstances connected with the death of Sir Charles cannot be said to have been entirely cleared up by the inquest, but at least enough has been done to dispose of those rumours to which local superstition has given rise. There is no reason whatever to suspect foul play, or to imagine that death could be from any but natural causes. Sir Charles was a widower, and a man who may be said to have been in some ways of an eccentric habit of mind. In spite of his considerable wealth he was simple in his personal tastes, and his indoor servants at Baskerville Hall consisted of a married couple named Barrymore, the husband acting as butler and the wife as housekeeper. Their evidence, corroborated by that of several friends, tends to show that Sir Charles’s health has for some time been impaired, and points especially to some affection of the heart, manifesting itself in changes of colour, breathlessness, and acute attacks of nervous depression. Dr. James Mortimer, the friend and medical attendant of the deceased, has given evidence to the same effect. « L’enquête n’a pu préciser les circonstances qui ont entouré la mort de sir Charles Baskerville ; mais, au moins, elle a dissipé certaines rumeurs engendrées par la superstition publique. « Sir Charles était veuf ; il passait pour quelque peu excentrique. Malgré sa fortune considérable, il vivait très simplement. Son personnel domestique consistait en un couple, nommé Barrymore : le mari servant de valet de chambre et la femme, de bonne à tout faire. « Leur témoignage, confirmé par celui de plusieurs amis, tend à montrer que, depuis quelque temps, la santé de sir Charles était fort ébranlée. Il souffrait de troubles cardiaques se manifestant par des altérations du teint, de la suffocation et des accès de dépression nerveuse. Le docteur Mortimer, ami et médecin du défunt, a témoigné dans le même sens.
The Hound of the Baskervilles, by Arthur Conan Doyle Le Chien des Baskerville, de Arthur Conan Doyle
"Arsene Lupin's personal enemy—the most illustrious Ganimard.” — Celui du plus illustre, de l’ennemi personnel d’Arsène Lupin, bref, de l’inspecteur Ganimard.
The Extraordinary Adventures of Arsene Lupin, Gentleman Burglar, by Maurice Leblanc Arsène Lupin gentleman-cambrioleur, de Maurice Leblanc