Initially the Kay family traveled to the Salt Lake Valley with the Brigham Young Company in 1848. The Kay family included John Moburn, his wife Ellen Cockcroft and his children Sarah, Maria, and Ellen. Maria died en route.
In Jacob Peart’s diary, he mentions that Susan Roberts Miller and Martha Royle were John Kay’s “women.” It is possible that they were his wives.
Birth date is confirmed by the Nauvoo Temple Endowment Register.