Liv has a few second names when you put her name into a name generator:

Elvish Name(www.chriswetherell.com):

Eldalote Sáralondë

Hobbit Name(www.chriswetherell.com):

Estella Burrows

Dwarf Name(www.myprecious.us):

Gwengwen , Queen of Durin’s Folk

Wizard Name(www.myprecious.us):

Eönwë , Grey Pilgrim