Went on a bit of a link-clicking bender and will add these names to the list. They're all sources of Thélio, which apparently has Breton/Welsh roots.
Télio or Telio
Teliav
Théliau or Théleau
Telo or Teilo (prn TAY-lo)
And a few other names from free associating with the origin of
Thelma.
Corelli - author of the book
ThelmaRonja or Ronia - another name invented for a fictional Scandinavian protagonist
Thekla or
TeclaThelford
Thélise
TelmoTelmaTelemachus
TellervoTelena - cool meaning, "of winter"
Teleon
Teleri
Telsilla
Telesmar
Telethusa
Telig
Telimena
Teller
Hamlet and
Malthe are both anagrams. Getting more creative, how about Meltha, Maleth, Letham, or Lathem?