Louise Dallas Carr, née Murray, was born in Pittsburgh, Pennsylvania on 2 January 1852. She was the daughter of James Butler Murray and the former Annie Margaret Shorb, both natives of Pittsburgh. Her father, a descendent of veterans of the American Revolutionary War, was an iron merchant and president of Pittsburgh’s First Exchange Bank. She had at least four siblings.

Louise was married to Captain Wilson Carr (b. 1852 in Maryland), son of General Robert H. Wilson of Anne Arundel County, Maryland. The couple’s daughter Annie was born in December 1874.

The marriage between Louise and Wilson proved brief as Wilson died in November 1875, eight days after he sustained wounds to his thigh after his shotgun exploded whilst out boating with a friend near his father’s home; he was 23. The couple’s daughter Annie died in December 1889, one day short of her fifteenth birthday. Louise never remarried.

Mrs Carr was aboard the Carpathia as a first-class passenger when that ship rescued the survivors of the Titanic disaster; she was travelling with Louise Mathias and they shared a cabin together whilst aboard. Undeterred by their experiences, they resumed their voyage on Carpathia after dropping off the survivors in New York. 

Louise Carr died in Baltimore on 14 July 1930; she was buried with her husband and daughter in Allegheny Cemetery, Pittsburgh.