On October 29, 1889 he married a young Polish girl named Lucy Baderski in a German ceremony at St. Boniface Roman Catholic Church in Whitechapel. They had met only five weeks earlier at a Polish social club in the East End.
Unfortunately for Klosowski, he was still legally married to his first wife, whom he had left back in Poland. She, however, seemed to have gotten wind of her husband's infidelity and moved to London in an attempt to oust Baderski. The two women appear to have cohabited for a time, until Klosowski's legal wife finally gave up and left, possibly because of the birth of her husband's and Baderksi's son in September of 1890. They moved around quite a bit, living in Cable Street, Commercial Street and Greenfield Street, respectively, until they finally emigrated to New Jersey later that year.
The exact date of their emigration is not known for sure, but the last occurence of the name in any records were in the national census of 1891, which listed them as living at 2 Tewkesbury Buildings, Whitechapel. This survey was taken in early April of that year.
It may be assumed, but without solid evidence, that it was the death of their baby boy (Wladyslaw or Wohystaw Klosowski, dead of "pneumonia asthenia" on March 3, 1891) which prompted the move, and so it would be likely that they left soon after the survey was taken, in April of 1891.
Klosowski found work in another barber's shop in Jersey City, New Jersey. The couple fought bitterly, supposedly over Klosowski's cheating heart. Soon after, he attacked Lucy with a knife, , as was reported in the Daily Chronicle of March 23, 1903:
Klosowski's real wife, Lucy Klosowski, who was present in the Central Criminal Court last week, has made a startling statement as to what occurred in the New Jersey shop. She states that on one occasion, when she had had a quarrel with her husband, he held her down on the bed, and pressed his face against her mouth to keep her from screaming. At that moment a customer entered the shop immediately in front of the room, and Koslowski got up to attend him. The woman chanced to see a handle protruding from underneath the pillow. She found, to her horror, that it was a sharp and formidable knife, which she promptly hid. Later, Klosowski deliberately told her that he meant to have cut her head off, and pointed to a place in the room where he meant to have buried her. She said, 'But the neighbours would have asked where I had gone to.' 'Oh,' retorted Klosowski, calmly, 'I should simply have told them that you had gone back to New York.'
Lucy was understandably upset, and pregnant to boot, so she returned to London without her husband in February of 1892, living with her sister at 26 Scarborough Street, Whitechapel. Her second child, named Cecilia, was born on May 15th of that year. Around the first of June, Klosowski was to return, and the two reunited for a bit before ending the relationship for good.