Here is a full family tree containing all the major characters from Season 1 to Season 12. There are probably errors so please point them out. The number after a character is a reference number and below you can find the link to their wiki page.
Here is the link to the tree:
http://conniving-puffin.wikia.com/wiki/File:CPTree.png
- http://conniving-puffin.wikia.com/wiki/Fay_Schnackendoodler
- http://conniving-puffin.wikia.com/wiki/Po_McWince
- http://conniving-puffin.wikia.com/wiki/Phillip_Sheer
- http://conniving-puffin.wikia.com/wiki/Susanne_McWince
- http://conniving-puffin.wikia.com/wiki/Cody_Mayor
- http://conniving-puffin.wikia.com/wiki/Bill_Core
- http://conniving-puffin.wikia.com/wiki/Mandy_Sheer
- http://conniving-puffin.wikia.com/wiki/Julia_MacFiphenschall
- n/a
- http://conniving-puffin.wikia.com/wiki/Kyle_Core
- http://conniving-puffin.wikia.com/wiki/Mozart_Sanderson
- http://conniving-puffin.wikia.com/wiki/Marina_Jensen
- http://conniving-puffin.wikia.com/wiki/Charles_Sanderson
- http://conniving-puffin.wikia.com/wiki/Ginger_MacFiphenschall
- http://conniving-puffin.wikia.com/wiki/Jim_Core
- http://conniving-puffin.wikia.com/wiki/Jane_Core
- http://conniving-puffin.wikia.com/wiki/Antoinette_Core
- http://conniving-puffin.wikia.com/wiki/Jamison_Sanderson
- http://conniving-puffin.wikia.com/wiki/David_Sanderson
- http://conniving-puffin.wikia.com/wiki/Mildred_Mayor
- http://conniving-puffin.wikia.com/wiki/Beatrice_Mayor
- http://conniving-puffin.wikia.com/wiki/Mozart_Sanderson
- http://conniving-puffin.wikia.com/wiki/Veronica_DeBraeden
- http://conniving-puffin.wikia.com/wiki/Lisa_DeBraeden
- http://conniving-puffin.wikia.com/wiki/Sierra_DeBraeden
- http://conniving-puffin.wikia.com/wiki/Allison_DeBraeden