https://www.npr.org/2022/01/28/1076323003/biden-cat-white-house-willow
"Willow made quite an impression on Dr. Biden in 2020 when she jumped up on the stage and interrupted her remarks during a campaign stop. Seeing their immediate bond, the owner of the farm knew that Willow belonged with Dr. Biden," Michael LaRosa, the first lady's spokesman, said in a news release.
Last month, the Bidens welcomed Commander, a 4-month-old purebred German shepherd puppy. In June, the Bidens' eldest dog, Champ, died. Meanwhile, Major, whom they adopted from an animal shelter in 2018, was rehomed after struggling to adapt to the busy White House environment.
Fuck Biden of course, but from what it sounds like it was an outdoor farm cat, I doubt the previous owner had a super strong connection to it