There once were six families. The Malfoys, the Snapes, the Notts, the Crabbes, the Goyles, and the Blacks. All had Slytherins in their families, but that doesn't really come in until later. This is the story of the children.
The Malfoys
They weren't expecting twins, but of course they got them. They gave their son a normal name for a wizard. Draco, but their daughter was given a muggle name. Chosen by the dark lord himself. After a girl he loved when he didn't know he was a wizard. Her name was Cassie.
The Snapes
Knowing the fact that he and Lily would never be. Snape met a nice woman, and they got married. They lived happily, and even had a daughter. Who was given the muggle name, Rachel. Shortly after Mrs. Snape died. A month before the death of James Potter. Only Lily, and Harry lived. Both overcome by the tragedies Lily, and Snape became closer, and when both of their kids were four they got married.
The Lestranges
Three years before the dark lord fell Rodolphus Lestrange, and Bellatrix Lestrange got married. The December in the year before the dark lord fell they had a son. Who was given the name Bellatrix wanted him to have. Tobias, after the muggle hero who was tortured, nearly to death.
The Crabbes
The Crabbes actually were expecting twins, so it wasn't that big of a surprise when they got two sons. One named Vincent, and the other's name was Marco.
The Goyles
Okay I'm sort of brain dead here, so. They had two sons. Twins. One named Gregory, and the other named Jake.
The Blacks
(Yes) Once there was a man named Sirius Black, who married a lovely girl by the name of Flora. (She's a muggle) As the only two living Blacks they made their home at Grimald Place. Flora was kind to Kreacher, so he learned to live with him. Together they made a child. Flora wanted to name him after an amazing hero that visited her kindergarten class when she was in that grade. The hero went by the name Aximili.