Born: January 14, 1840, Belvidere, Illinois.
Died: March 11, 1907, Indianapolis, Indiana.
Buried: Crown Hill Cemetery, Indianapolis, Indiana.
Daniel was the son of Albert Lucas and Catherine Robertson, and husband of Mary Longley (married 1862).
In 1868, he moved with his family to Indiana. He enrolled at the Indiana Normal Institute at Burnettsville, and began preaching at the local church.
After marriage, he joined Company C of the 99th Indiana Volunteer Infantry as a second lieutenant.
On October 24, 1862, he was appointed regimental chaplain. Eighteen months later, he was transferred to the office of provost marshal, where he served until the end of the war. His regiment fought in the Vicksburg campaign, the second Battle of Jackson, the Chattanooga campaign, the Battle of Missionary Ridge, and many skirmishes.
After the war, Lucas studied for the ministry. In 1876, he settled in Des Moines, Iowa, where he pastored at the Central Christian Church and helped found Drake University.
In 1888, he returned to Indiana to pastor the Central Christian Church of Indianapolis. He also served as Department Commander of the Grand Army of the Republic, and as secretary of the Morton Monument Commission.
At the time of his death, he was pastor of the Seventh Church in Indianapolis.