These are two names from books I read years ago.
I googled Leolie and found a few Leolies - it also seems to be a surname. Is is derived from Leonie?
Also Helvie. I did find Helvi and Helvie/Helvey as a last name - derived from Helwig. Also Hillevi which the db says comes from Heilwig. Any other suggestions for Helvie?