Sharon may be a feminine name, but Jaron doesn't sound feminine at all. The name just doesn't really sound right in English usage, and there's no way this sounds anything like Yaron.
Jaron is the English variant of the Hebrew name Yaron which means "He who sings and shouts praises."
It was a common Hebrew practice to take a word (in this case "ron" which means to sing or shout praises) and make it a name by adding a Ya or Ye to the beginning of it. When translated into English those become J's.