My family lived in County Wexford in the 18th century. They were of the Gentry Class, and were very educated. Ties seem to be to England, where I have found many other LAHEEs all over England, but cannot connect them to my family in Ireland. But the name is spelt clearly, LAHEE. One English cousin even named their youngest son, Samuel Lahee Gird.
I have researched the LAHEE name by that spelling and found LAHEEs throughout England, but cannot as yet make the tie to my Wexford family, although they must surely have been related.
I have several old family letters written in 1792- early 1800s, by a Margaret Maria LAHEE, who was a first cousin to my ancestor, Henry Gird Jr, also of Wexford. She also mentions her mother, and names her two sisters in two letters. She often signs her letters: "Your Most Affectionate and Adoring (or Loving) Cousin, M. Maria Lahee, Wexford, Ireland"...and the date, etc.
I hope this information helps you & others find you ancestors, and origins, and I hope it helps me, too.