Catherine married Alexander Worthington on April 14, 1844, in Christiansborg.
On April 14, 1844, Catherine Mulgrave wed Alexander Worthington, a Jamaican Moravian missionary, in Christiansborg on the Gold Coast. Their marriage represented both personal and professional alliances, as both were devoted to the mission's educational and evangelical aspirations. However, the marriage was fraught due to Worthington's improprieties, leading to its eventual dissolution by the Mission. This event underscores the social challenges faced by Catherine, dealing with personal strife while committed to her professional duties within a rigorous missionary environment.