Not all of this information is useful, like most of the parents' names, I just wrote them down to make it all look uniform and help myself and you clarify who's related to who and information about the characters that may or may not be important to help you understand. Also, Most of the parents' names I made up, so if you see a name you don't recognise then they are most likely made up by me. I know that Trix and Umber don't have actual names in the books so I made some up for them. As for Glimmer, if you've read Stellarlune (which hopefully you have as I have already given some spoilers), then you would know that she has a name and what it is. Sorry for dragging on with this long note, I'll let you get back to reading now.
Sophie Foster-Ruewen (18)
Parents: Unknown
Adoptive Parents: Edaline and Grady Ruewen
Human Parents: William and Emma Foster (Conner and Kate Freeman)
Adoptive Sister: Jolie Ruewen (deceased)
Human Sister: Amy Foster (Natalie Freeman)
Adoptive Uncle and Aunt: Kesler and Juline Dizznee
Adoptive Cousins: Dex, Rex, Lex and Bex Dizznee
Ruy Ignis (23)
Parents: Benjamin and Ainsley Ignis
Sister: Talia Ignis
Fintan Pyren (1476)
Parents: Christopher and Annalise Pyren
Sister: Lucinda Ondsinn-Pyren
Wife: Asha Pyren
Brother In-Law: Gethen Ondsinn
Sister In-Law: Gisela Sybilless
Nephew: Keefe Sencen
Nieces: Kayla Sencen-Sybilless and Evalyn Ondsinn-Pyren
Gethen Ondsinn (528)
Parents: Thomas and Madeline Ondsinn
Wife: Lucinda Ondsinn-Pyren
Daughter: Evalyn Ondsinn-Pyren
Brother In-Law: Fintan Pyren
Sister In-Law: Asha Pyren
Gisela Sybilless (643)
Parents: Julian and Royalty Sybilless
Sister: Asha Pyren
Ex-Husband: Cassius Sencen
Fiancé: Cecilia Andeline
Son: Keefe Sencen
Daughter: Kayla Sencen-Sybilless
Aunt: Vespera Folend
Asha Pyren (1305)
Parents: Julian and Royalty Sybilless
Sister: Gisela Sybilless
Husband: Fintan Pyren
Aunt: Vespera Folend
Nephew: Keefe Sencen
Nieces: Kayla Sencen-Sybilless and Evalyn Ondsinn-Pyren
Lucinda Ondsinn-Pyren (749)
Parents: Christopher and Annalise Pyren
Brother: Fintan Pyren
Husband: Gethen Ondsinn
Daughter: Evalyn Ondsinn-Pyren
Rayni Aria (22) (Glimmer)
Parents: Behnam and Esha Aria
Sister: Elizabeth Aria
Dex Dizznee (18)
Parents: Kesler and Juline Dizznee
Brothers: Rex Dizznee, Lex Dizznee
Sister: Bex Dizznee
Uncle and Aunt: Grady and Edaline Ruewen
Cousin: Jolie Ruewen
Adoptive Cousin: Sophie Foster-Ruewen
Avery Alenefar (29) (Trix)
Parents: Ethan and Felicity Alenefar
Girlfriend: Elizabeth Aria
Uncle: Tiergan Alenefar
Elizabeth Aria (27) (Umber)
Parents: Behnam and Esha Aria
Sister: Rayni Aria
Boyfriend: Avery Alenefar
Alvar Vacker (32)
Parents: Alden and Della Vacker
Brother: Fitz Vacker
Sister: Biana Vacker
Girlfriend: Talia Ignis
Talia Ignis (31)
Parents: Benjamin and Ainsley Ignis
Brother: Ruy Ignis
Boyfriend: Alvar Vacker
Cecelia Andeline (612)
Parents: Joshua and Paris Andeline
Fiancé: Gisela Sybilless
Step-Son: Keefe Sencen
Step-Daughter: Kayla Sencen-Sybilless
Kayla Sencen-Sybilless (2)
Father: Cassius Sencen
Mother: Gisela Sybilless
Step-Mother: Cecelia Andeline
Brother: Keefe Sencen
Uncles and Aunts: Fintan and Asha Pyren, Gethen Ondsinn and Lucinda Ondsinn-Pyren
Cousin: Evalyn Ondsinn-Pyren
Grandaunt: Vespera Folend
Evalyn Ondsinn-Pyren (19)
Parents: Gethen Ondsinn and Lucinda Ondsinn-Pyren
Uncles and Aunts: Fintan and Asha Pyren, Cassius Sencen, Gisela Sybilless and Cecelia Andeline
Cousin: Kayla Sencen-Sybilless
Grandaunt: Vespera Folend
Vespera Folend (3657)
Parents: Maverick and Kennedy Folend
Sister: Royalty Sybilless
Niece: Gisela Sybilless
Grandnephew: Keefe Sencen
Grandnieces: Kayla Sencen-Sybilless and Evalyn Ondsinn-Pyren