Teasdale was born in London, England. Teasdale was baptized into the LDS Church on 8 August 1852, after learning about the church from a Mormon co-worker.
In 1853, Teasdale married Emily Emma Brown, a member of the LDS Church. In 1857, Teasdale became a full-time church missionary in England and Scotland. In 1859, he became the supervisor of the missionaries in Scotland. In 1861, Teasdale was released as a missionary and he and his wife emigrated to Utah Territory.
In Utah, Teasdale taught school and was a member of the Mormon Tabernacle Choir. In 1868–69, he returned to England as a missionary to help British Latter-day Saints migrate to Utah. His wife died in 1874, after he had fathered seven children by her, five of whom died in infancy. The couple had been monogamous, but after Emily's death, he had four more recorded marriages, and possibly as many as 10 more, all without issue.[2] In 1875, he served a mission to Tennessee, North Carolina and Virginia. He became president of the church's JuabStake.
Teasdale was ordained an apostle on 16 October 1882, by church presidentJohn Taylor. Future church president, Heber J. Grant, was ordained an apostle on the same date. Teasdale immediately served a six-month mission to the Indian Territory.
Teasdale died in Salt Lake City at age 75 of an intestinal obstruction.[4] He was buried at Salt Lake City Cemetery and was succeeded in the Quorum of the Twelve by Anthony W. Ivins.
Notes
^Teasdale and Heber J. Grant were ordained apostles on the same date.
