Ilan (×ילן) means "tree"
Ilan Ramon's name is already a Hebrew name. In Hebrew letters it is spelled אילן רמון
The boys' name Ilan is of Hebrew origin and means "tree". It is not very known in the United States or United Kingdom, but is very popular in Hebrew speaking countries.
ilan (אילן) is a Hebrew word for tree.
The name "Sylvan" is not Hebrew and it means "relating to trees". An unrelated name in Hebrew has the same meaning" Ilan, pronounced ee-LAHN.
Ilan Chester's birth name is Ilan Czenstochowski.
You can use either Etz or Ilan.
Ilan Komrad's birth name is Ilan Benjamin Komrad.
Ilan
Yahadine is not a Hebrew name.
Brealle has no meaning in Hebrew. It is not a Hebrew name. (only Hebrew names have meaning in Hebrew).
Teseed is not a Hebrew name. In fact, no Hebrew name begins with "Tes..."
As far as the name Alan goes, the closest names in sound would be Ilan (אילן) and Alon (אלון), both meaning "tree". Yo'el (יואל) is a Hebrew name, and is the name of a prophet. It means "Adonai is our G-d". Lippah (ליפה) doesn't appear to be Hebrew in origin. It appears to be a Yiddish name.