babynames.com tells me
Quote:
The meaning of the name Lillian is Lily
The origin of the name Lillian is English
Alternate spellings: Lilian |
Think baby names just tells me that it means Lilly too.
I'm not seeing any religious notes.
but I would take "my god is a vow" to mean that this person has found religion, or their god, by taking a vow. Like a vow of silence, Chasity, charity. god has become part of their life.