Alan & Martha ---> Brad, Jenny, Carol
Alan & Martha are Brad, Jenny and Carol's grandparents
Alan --> Martha
Alan is Martha's husband
John --> Carol
John is Carol's father (dad)
Jenny & Carol ---> Martha
Jenny & Carol are Martha's granddaughters
Mike, Ted & Carol ---> ???
Mike, Ted & Carols are sibblings
John ---> Mike
John is Mike's father
Mike & Ted ---> Carol
Mike and Ted are Carol's brothers
Anna & Will ---> Alan & Martha
Anna & Will are Alan & Martha's children
Mike & Ted ---> Will & Pat
Mike & Ted are Will and Pat's nephews
Pat ---> Jenny
Pat is Jenny's mother
Jenny ---> Anna
Jenny is Anna's niece
Brad ---> John
Brad is John's nephew
Anna ---> Jenny
Anna is Jenny's aunt
Brad & Jenny ---> Ted
Brad & Jenny are ted's cousins
Mike, Ted & Carol ---> John & Anna
Mike, Ted & Carol are John and Anna's children
Anna ---> Will
Anna is Will's sister
Jenny & Brad ---> Will
Jenny and Brad are Will's children