Thanks @becausedragonage for the recent ask, I realized if I answered it in that post it would have gotten too long lol. Without further ado, my DA OC babies:
Daria Brosca & Alistair:
Ok other than the whole thing with Kieran (who. idgaf what canon says. they are part of his life they are like his "fun aunt & uncle") they had both thought like "Well grey wardens can't have kids AND dwarves & humans can't have kids together" so they didn't worry about it until oopsies it turns out they CAN. Their first son is born (Can kids be born with the taint? Idk. but I decided yes) and they name him Duncan :) and he is very frail and sick. Years later they come across a 2yo orphaned elven girl (during Inquisition stuff happening) and they try to find a home for her but no one was suitable so they just keep her and go off someone's recommendation to name her Adahari. Duncan (if he survives to adulthood, haven't decided yet) becomes a rogue; Adahari a mage.
Garrett Hawke & Fenris:
My Hawke got a permanent hysterectomy when the Arishok impaled him on the sword sooooooooo. Also Fenris was very hesitant because "Are you sure we should even be parents" but similar to above, they find a young orphaned girl in the alienage after the Qunari invasion and she just kinda keeps coming back even when they find other families to take her in. So eventually they keep her and rename her Maribeth (after Marian and Bethany). She ends up being a mage and Fenris is even more freaked out but Hawke is delighted.
Kiilani Cadash & Josephine:
For a long time they just didn't think it was a good idea - they were both busy with the Inquisition and then Josie was dealing with her family's estate and affairs, Kiilani was traveling and working as a mercenary company commander. But many years later when things settle down a bit they talk about it and decide adoption would be good, plus it would leave an heir for the Montilyet stuff (beyond Yvette's children). Then Veilguard stuff happens and they're suddenly confronted with an orphaned dwarf boy whose family got wiped out with the "new" blight. They take him in, his name is Wyldan and he's approx 10-12 years old when they adopt him. On his way to be a warrior (especially with Kiilani training him).
Plaio Lavellan & Cassandra:
*Steeples my fingers* I've thought about them the most.
So in a post I made long ago about them getting married right before one of the last battles against Corypheus because one or both of them might die? Yeah. That's where their first kid comes from, and he's born shortly after when the main-game ends. Anthony Lavellan-Pentaghast is their firstborn, and he becomes a warrior like his mom, most likely a seeker in her new order as well. He looks like the carbon copy of Plaio just with longer hair and no vallaslin. He loves dragons and is appalled that his parents contributed to the death of at least 12 dragons. Their second child is born during Trespasser (literally Plaio loses an arm at the same time Cassandra goes into labor) and her name is Atisha; she's a rogue and a hunter just like her dad. She's the peacekeeper, very quiet and reserved, very good at reading people. Their last kid is born about a year later and she's the wildchild. Ignisia is a mage and it starts YOUNG. She has her mom's dark hair but her dad's bright green eyes and she tends to electrocute things when she gets too excited.
Minerva Adaar & Sera:
Minnie didn't really want kids at all and Sera didn't care either way, so they never have any official kids. But Minnie does consider all of her mage students to basically be her kids and Sera considers any of the younger Red Jennies to be her proteges, so I guess those ones count? They have a slowly growing army of prankster rogues and mages.
Enzidya Trevelyan & Dorian & Iron Bull:
YEAH theirs was an accident too i.e. they FAFO but they adore their kid and wouldn't trade them for the world. Asaara Pavus is born right after events of Trespasser. Dorian thought it would be hilarious and would make his father turn in his grave if he knew that his grandson was half-qunari and had been given the Pavus name. Enzy was fine with not passing his name along (he changes his last name to Pavus too). Iron Bull is just delighted to have a little one. Asaara was picked by Bull once he saw the little guy because he was so... spindly and swift-looking. Turns out he was 100% right bc that kid becomes a rogue as well.
ROOKS:
(I haven't decided anything for sure on them yet, will perhaps add to this later)