Pure, holy, or from the valley
Glendy is often considered a diminutive or variant of Glenda, a Welsh name combining elements meaning 'pure' and 'good'. It may also be interpreted as a topographical name referring to a glen or valley. While rare today, it follows the mid-century trend of names ending in a diminutive 'y'.
Less common today
Glendy isn't in the latest US Top 1000. It last peaked at #5,504 in 1998.
US births per 5-year period, 1990βpresent (SSA data).