Now, while many heroes and villains have hooked up, or married, I am primarily going to focus on larger families for the Family Life series. This one is going to heavily focus on the Summers-Grey family (As close to royalty as mutants get for lineage).
Now the Summers family (which heavily includes the Grey family, though the girls tend to keep the Grey last name) is huge and convoluted in comics. So let’s start with the main man who founded the legendary modern family:
Christopher Summers (Corsair): He is the leader of the Starjammers, space-pirate do-gooders. He has worked with the X-Men on several occasions, and even attented Scott’s first wedding. He has one wife (Katherine Ann Summers). He also has three children, Scott, Alex and Gabriel.
Alex Summers (Havoc): The middle brother, Alex became the mutant known as Havoc. He has worked with both the X-Men and the Avengers. He has also worked with the Starjammers and other groups as well. He has no children, or wife.
Gabriel Summers (Vulcan): The youngest Summers brother, Gabriel had an unconventional birth. He was ripped from his dying mothers womb, and incubated (without the knowledge of his father) by the Shi’ar. Eventually he became the Emperor of the Shi’ar empire, and fought a civil war before ultimately losing. He served on the X-Men briefly as well. He has a wife, Cal’syee Neramani (also known as Deathbird), but no children.
Scott Summers (Cyclops): Scott is the eldest brother. He was one of the first X-Men, and has led various incarnations of the X-Men. While it’s with Scott that the Summers/Grey family gets complicated, most of that comes from his grandchildren. So, let’s start with his two marriages. Madelyne Pryor (The Red Queen), his first wife, and clone of Jean Grey. Jean Grey (Marvel Girl/Phoenix), second wife. And his only child, Nathan Summers (Cable). His son also has a clone (so sort of has a second son) Stryfe. Scott also has an alternate reality daughter who plays a major role in the main universe, Rachel Grey (AKA Marvel Girl, Phoenix, or most recently, Prestige).
Nathan Summers (Cable): Nathan is the only actual son of Scott, but he does have a brother/clone. His mother was Madelyne Pryor. Nathan has served on the Avengers, X-Force, X-Men, the Six Pack, the New Mutants and several other groups. Much like his father, he has had two wives. Aliya Dayspring (also known as Jenskot, his first wife), and Hope Summers (his second wife, not to be confused with the other Hope Summers). He has a clone/brother named Stryfe. He also has 3 half-siblings from alternate realities. Only two of these have significant impact on the 616 universe those. His half brother is called Nathanial Grey (known as X-Man). And his half-sister, Rachel Grey (Prestige). He has two children, neither of which are actually his. There was Tyler Dayspring (Genesis) who was his step-son/son (it’s complicated) from his first marriage. Hope Summers was his adopted daughter (first mutant born after M-Day, him and his second wife Hope Summers, adopted the baby and raised it).
Stryfe: A clone of Nathan Summers, he has all the same powers. He was created by an alternate reality Rachel Summers and raised by Apocalypse. He did not have a wife, though he did have a child with Aliya Dayspring (Cable’s first wife), known as Tyler Dayspring/Genesis, who was raised by his adoptive father (and technically speaking, father) Cable.
Tyler Dayspring (Genesis): Tyler Dayspring was the offspring of Aliya Dayspring and Stryfe (clone of his adoptive father Nathan/Cable, his mothers husband). He eventually took on the name Genesis and tried to become the new Apocalypse after Apocalypse had died. He has no known children or wives.
Nathaniel Grey (X-Man): An alternate reality son of Scott and Jean (from the Age of Apocalypse timeline). He was actually one of the most powerful mutants known, up until his powers were blown out by the Omega Machine. In which case he trained his mind to make use of what powers he has left (limited telekinesis) but also to use his brain strategically, making him an effective leader and strategist. He has no wives or kids, but was last seen in a relationship with Dani Moonstar.
Madelyne Pryor (The Goblin Queen/The Red Queen): Madelyne Pryor was a clone of Jean Grey who was created by Mr. Sinister. She eventually married Scott Summers (they divorced, when Jean Grey was revealed to be alive. And by divorce, I mean Scott left her in the middle of the night, having only married Madelyne because of her similarity in appearance to Jean in the first place). She has one child, and a clone of that child (Nathan Summers, and Stryfe respectively).
Jean Grey (Marvel Girl/Phoenix): Jean was another member of the original X-Men who fell in love with Scott. In between various deaths she married Scott (becoming his second wife). In the 616 universe they never had any children (though she is genetically speaking, the mother of Nathan Summers, despite not actually being the mother). In alternate realities, there were 3 children between her and Scott. 2 of which have any major impact on the 616 universe. Nathaniel Grey (X-Man) and Rachel Grey (Prestige). The third daughter was known as Rachel Summers (Mother Askani) who played a limited role in the creation of Stryfe.
Rachel Grey (Prestige): Rachel Grey has been known by several aliases. In the 616 universe she served briefly as the Phoenix, and also took her mothers name in the early X-Men days (Marvel Girl) before finally settling on Prestige (on recommendation of Kitty Pryde to take an identity that is all her own). She has served on the X-Men, Excalibur, and Starkammers as well as other teams. She has no husbands or children, but she is currently in a relationship with the Kurt Wagner (Nightcrawler).
Rachel Summers (Mother Askani): Another alternate reality version of Rachel Grey, this one ultimately became known as Mother Askani. She formed a clan known as “Clan Askani”. She was responsible for cloning Nathan Summers giving us Stryfe. Her parents are Jean Grey and Scott Summers, but no known children or husband.
Hope Summers: The adopted daughter of Nathan Summers and his second wife Hope, Hope was named after her (adopted) mother when she died. She is the first mutant born since M-Day and was the main cause for the whole Avengers vs X-Men event (as she is one of the most powerful hosts of the Phoenix which was coming to Earth). She has served on both the X-Men and X-Force. She has no children or husbands.