Katie Booth married Arthur Clibborn at the age of 28 on 18 February 1887. It was a well-attended event and subject of interest to the press, which reported that at least 6,000 people were in attendance. On marriage, Arthur and Kate changed their surname by deed poll to Booth-Clibborn at the insistence of General Booth. They had ten children, including the Pentecostal preacher william Booth-Clibborn. Following the birth of their tenth child the Booth-Clibborns resigned from The Salvation Army in January 1902, unhappy at the restrictive nature of the Army's military style of government. At her husband's wish, Katie and the children travelled with him to the cult leader John Alexander Dowie's Zion City, a township about 40 miles north of Chicago. Katie Booth-Clibborn did not believe Dowie's grandiose claims — in 1901 he declared himself the prophet Elijah the Restorer, and in 1904 the first apostle of Jesus Christ — and was offended by his criticism of her father even though her resignation had made her an outcast from both her family and the Army. For the rest of her life she had almost no contact with her father or with those siblings who remained in The Salvation Army.