Meaning and Name Origin
Shirly \sh(ir)-ly\ as a girls' name is of Old English origin, and the meaning of the name Shirly is "bright meadow". Shirly is a variation of Shirley (Old English): place name. Only rarely used as a name for girls.
Shirly is a very popular first name for females (#1832 out of 4276, Top 43%) but a rare surname for both adults and children. (2000 U.S. Census)
Below is a graphed analysis of the popularity of the girl name Shirly and affiliated names. Prominent related forms of Shirly (#unlisted) rated in the Top 1000 are Sheryl, Shirlee, Shirlene and Shirley. These girl names reached the peak of their popularity during the years 1940-1949 and have become much less widespread since, with the versions Sheryl, Shirlee, Shirlene and Shirley becoming less fashionable. (2014 Birth Statistics)