Pure
Kaitland is a modern American elaboration of the name Caitlin, which is the Irish form of Catherine. It likely evolved through a blend of the traditional Caitlin with the popular 'land' suffix or as a phonetic variant of the name Maitland.
Less common today
Kaitland isn't in the latest US Top 1000. It last peaked at #4,427 in 1996.
US births per 5-year period, 1990βpresent (SSA data).