Race parents

[Legolas]

In the case of Legolas, his father's name is used a couple of times. The main reason we don't see it more is that he isn't introduced or asked his identity nearly as much as Frodo.

'Welcome son of Thranduil! Too seldom do my kindred journey hither from the North.'

He was named Elf-friend because of the great love that grew between him and Legolas, son of King Thranduil, and because of his reverence for the Lady Galadriel.