What does Lyall mean?
Lyall has 1 variant: Lyell.
Lyall is an uncommon first name for men but a very popular surname for both adults and children (#17395 out of 150436, Top 12%). (2000 U.S. Census)
Lyle is the only prominent varying form of Lyall (#unlisted) listed in the Top 1000. These boy names reached the top of their popularity during 1920-1929 (usage of 0.833%) and are now significantly less widespread, with Lyle becoming less trendy. Shown below is a comparison of the usage of the boy name Lyall and associated names. (2014 Birth Statistics)