The phrase "a devoted companion" is correct and usable in written English.
You can use it to describe someone who is loyal and supportive, often in the context of relationships or friendships.
Example: "Throughout the years, she has been a devoted companion, always standing by my side during difficult times."
Alternatives: "a loyal friend" or "a faithful partner."
He was also a devoted companion and wonderful friend.
He was a devoted companion to the late Dr. Gertrude Ashur.
He will be remembered as a devoted companion to his wife Isabel, and as a gentleman whose great heart embraced his extended family.
"I'm always saying, 'O.K., this is the plan, this is what we're going to do next.' And Michael always says, 'Do I have a voice?' " Her friends watched as she turned from a commitment-phobic princess to a devoted companion who made chicken for him in her oven, which until then served as shoe storage.
If you're still sleeping off 2016 and the New Year's celebration that said good riddance to it, you need to be awakened with love from a devoted companion.
Research on next of kin's experiences of end-of-life care has shown that the relative's end of life evoked both feelings of guilt and shame in the next of kin [ 1] and also of being a devoted companion who knows the dying person best [ 2].
In her later years, Peggie worked with charities including amFAR & HRC and loved to travel, garden, and spend time with her devoted companion, Diego; a long-haired Chihuahua.
Kitty is survived by her sister, two nephews, a niece, a grand niece, and her loving and devoted companion.
Sam Weller, fictional character, a humorous Cockney bootblack who becomes Samuel Pickwick's devoted companion and servant in The Pickwick Papers (1836 37) by Charles Dickens.
Suddenly, senses and reason connect, and Helen Keller, blind and deaf from the age of 19 months, has discovered a way to communicate with the world through the teachings of her devoted companion, Annie Sullivan.
Devoted companion of Alfred Greenberg.
