After publishing ninety Tracts, Newman decided, in Tract 90, that the Branch Theory (that the Anglican, Eastern Orthodox and Roman Churches were all part of the one Church) was not enough, and converted to Catholicism, and later became a Cardinal. Enemies of the Movement thought this proved that they were trying to reunify with Rome. Others followed Newman to Rome (for example, Henry Edward Manning, another important Tractarian, converted in 1851) while others, such as Pusey and John Keble, remained in the Anglican Church to continue the work of reforming it.