Oscar Summers (adoptive great-grandfather-in-law, deceased);
Daniel Summers (grandfather-in-law^[1], deceased);
Amanda Mueller (Black Womb) (grandmother-in-law);
unnamed father-in-law, deceased;
Gloria Dayne (Fontanelle) (great-step-aunt-in-law);
Philip Summers (husband);
Christopher Summers (Corsair) (son, deceased)
Katherine Summers (daughter-in-law, deceased)
Scott Summers (Cyclops) (grandson);
Alexander Summers (Havok) (grandson)
Gabriel Summers (Vulcan) (grandson, deceased)
Madelyne Pryor-Summers (Red Queen) (granddaughter-in-law, deceased)
Jean Grey-Summers (Phoenix) (granddaughter-in-law, deceased)
Cal'syee Neramani (Deathbird) (granddaughter-in-law)
Nathan Summers (Cable) (great-grandson)
Aliya Dayspring (Jenskot) (great-granddaughter-in-law, deceased)
Hope Summers (great-granddaughter-in-law, deceased)
Tyler Dayspring (Genesis) (step-distance descendant, deceased)
Hope Summers (adoptive distance descendant)
Rachel Grey (Marvel Girl) (alternate reality great-granddaughter)
Rachel Summers (Mother Askani) (alternate reality great-granddaughter, deceased)
Nathaniel Grey (X-Man) (alternate reality great-grandson)
Stryfe (great-grandson's clone)

Corsair (son, deceased);
Cyclops and Havok (grandsons);