Andrew joined the South Carolina State Militia as a boy of 16. Many years later, he applied for a pension for service during the Revolutionary War. Some details of Andrew's life can be gleaned from his pension application. He was awarded a pension at two separate times in his life. Andrew is also on a list of men who rode with Francis Marion, the Swamp Fox, for his service during the Revolution.

Andrew Logan married Ann Nancy Meriwether about 1794 in South Carolina. She was the daughter of Zachary Meriwether and Jane Lewis. Through this marriage, Andrew and Nancy's descendants are connected to the Meriwether and Lewis lines.

In his will, Andrew lists the following children:
Zachary Logan, John L. Logan, Francis Logan, Tyler Logan, Leroy Logan, Willis Logan, Huldah Logan Crawford, Frederick B. Logan, and Isaac Logan. Andrew appointed his oldest and youngest sons, Zachary Meriwether Logan and Isaac Logan, as well as his nephew, Dr. John Logan, as executors of his estate.

Below are some brief notes about each child:
1) Zachary Meriwether Logan, with several other family members, moved to Greene County, Alabama, just after 1820. His final resting place lies in Jasper County, Mississippi.
2) John Lewis Logan moved first to Greene County, Alabama, then on to Jasper County, Mississippi, with wife Elizabeth and children.
3) Tyler Logan was living in Lafayette County, Mississippi by 1840. He married three times and raised a large family. His youngest son was born when he was 72.
4) Huldah Logan married Robert Crawford. They moved first to Georgia, then on to Nacogdoches County, Texas before 1860.
5) Willis Logan also moved to Greene County, Alabama, where he married Priscilla in 1828. By 1860 they, too, were living in Mississippi.
6) Francis Logan remained in Abbeville and married Mary Buchanan. His will was proved in Abbeville, South Carolina on 14 Nov 1850.
7)Leroy Elisha Logan was also in Greene County, Alabama before 1830 when he married Eliza. Letters of Administration of his estate were granted for probate in October 1854.
8) Andrew J. Logan and family remained in South Carolina. He is buried in the First Damascus Baptist Church Cemetery, Phoenix Community, beside his mother and father. Three of his children, Augustus, Martha Huldah, and Lucy Anna are also buried there.
9) Frederick B. Logan and wife, Elizabeth Ray, also remained in South Carolina. Fred is shown to be a farmer in census records. Upon Fred's death, his estate was valued at $18,432, a nice sum at that time; so Fred appears to have been a succesfull manager.
10) Isaac Logan married Sarah Sample, remained in South Carolina and raised at least 6 children.

Andrew was a respected member of his church and community. The city of Greenwood now stands on land that was settled by the Logans. An authentic log home, estimated to have been built in the late 1700's, was discovered in 1967 inside a house on Spring Street in Greenwood as it was being dismantled. The cabin now rests at Ninety Six National Historic Site. After much research and discussion, the cabin is attributed to Andrew I, and now stands as a monument to his character and perseverance on the frontier. His grandson's accomplishments, along with many other pioneers within the Abbeville and Greenwood communities, also exemplify a shining example of strength and dedication to community.

The following death notice appeared in the Raleigh Christian Advocate (Raleigh, North Carolina) on Friday, May 9, 1856, page 2:

Capt. Andrew Logan, a soldier in the war of the Revolution, died at his residence in Abbeville District, S. C., on the 14th inst, at the advanced age of 93 years.