Also searching for Lyle roots. My husband's family. He has done DNA with not many results. His ggrandfather was Mathew Lyle (abt 1824-born)supposedly coming from Ireland--emigration date unknown, but he did serve in Mexican War and married in 1850 in St. Louis before settling in Iowa and having 3 children and there he died young in 1859. Many Lyle surnames in Scotland so I am sure his name is Scots Irish. His father listed (on marriage license) as Robert Lyle and mother as Mary Maxwell, but no further info.