Mormon Church Practiced Polygamy in Secret for Decades

The Mormon Church Practiced Polygamy in Secret for Decades. That's Not a Theory.

The history of polygamy in the LDS Church is not a fringe claim circulated by critics on the internet. It is documented, institutionalized, and consequential. The Mormon Church practiced polygamy in secret for a sustained period after publicly disavowing the practice, and understanding that historical pattern matters enormously for how we evaluate the institution today.

The short answer to what happened: the Church publicly renounced plural marriage under federal pressure in 1890 via the Manifesto issued by Wilford Woodruff, then continued performing and sanctioning plural marriages for years afterward, largely out of public view. This was not rogue behavior by local leaders. Senior apostles and church presidents were involved.

Background: How the Secret Practice Survived the Manifesto

The 1890 Manifesto is often presented in Sunday School as a clean break. It was not.

After the Manifesto, new plural marriages continued to be authorized and performed, particularly in Mexico and Canada where American federal law had no reach. Church leaders quietly encouraged the practice to continue in those jurisdictions. When questioned publicly, they denied it. This dual reality, public renunciation and private continuation, persisted well into the early 1900s.