date sealed to spouse
My granduncle Joseph Higbee Rogers (KWZD-4KG) and his wife Louesa Bee Harper (KWZD-4K5) were married 10 June 1888 at Lehi, Arizona. In their personal history they along with their four oldest children traveled to St. George to be sealed as a family in September 1898. In the Ordinances section it has Joseph and Louese endowment completed 20 September 1898 at St. George.
The question I need to understand is the date sealing to spouse was completed: 9 May 1894 at Other. Where did this date come from and should it be changed to the endowment date of 20 September 1898.