[2] After eight years of courtship, Lyman married Brown on September 9, 1896; the marriage was performed by Joseph F. Smith in the Salt Lake Temple.

He authored key works on road construction and water flow measurement, earning the prestigious J. James R. Croes Gold Medal in 1915 for his contributions to engineering science.

As vice-chairman of the Utah State Road Commission from 1909 to 1918, he played a crucial role in expanding its budget and infrastructure projects.

Lyman also served as city engineer of Provo, worked on railroad surveys, and designed waterworks systems across Utah, Idaho, and Wyoming.

[6] As an apostle, he also served as Assistant Commissioner of the Church Educational System from 1919 to 1924, and as a member of the superintendency of the Young Men's Mutual Improvement Association until 1935.

[1]: 175 In 1922, Lyman was assigned to counsel Anna Jacobsen Hegsted, a woman previously excommunicated for polygamy, and prepare for readmittance to the church, which he did.

[7] After the Salt Lake City Police Department, who were at the time enforcing anti-polygamy laws, joined the investigation by church leaders, Lyman and Jacobsen's relationship was proven.

[1]: 185 The Quorum of the Twelve Apostles convened a disciplinary council on November 12, 1943 to hear the case, and Lyman was immediately excommunicated.

[1]: 180  Apostle Spencer W. Kimball recorded regarding the disciplinary council that "He tried to link his sin with polygamy but the evidence gave no corroboration to the story.