Disclaimer: I do not own Alice, Luna, Lorcan, Lysander, or anything associated with the Harry Potter series or Tim Burton's Alice in Wonderland. The only things I own are the plot, Mirana Hightopp, and a few bags of tea.
Let's assume that Alice's adventures in Wonderland took place around the time that Harry was in his first year at Hogwarts. . . .
Not a single sound escaped Alice Hightopp as she sat in the pouring rain, hidden by the trees of the forest. She rested her hand on her swollen stomach and wished that Torrent could be there with her. He would ease the pain; he would want to see this.
A single sob stood out against the soft pitter-patter of the rain. The trees' branches did little to shield the two women from the freezing water, but that did not matter at the moment. All that mattered was that the woman accompanying Alice was nodding with a broad smile. With a final, exhausting effort, Alice's pain became more of an ache, and a small crying reached her ears.
Exhausted, all she could do was mutter, "Mirana Grey Hightopp," before giving way to fatigue.
Not an hour's drive away, one newborn baby was crying; the other was sleeping. Luna Sweeny sighed with a small, joyful smile and squeezed her husband's hand. She would name the quiet one Lysander, the other Lorcan. But not now. Now, she must sleep. Rolf knew what to do. He wouldn't disappoint her.
While his wife slept, Rolf silently picked middle names for his sons. Cathal and Ronan. "Battle mighty" and "liitle seal." Rolf frowned. "Little seal" wasn't exactly a good name, but it definitely described the little boy's wails. Besides, it had a certain ring to it. Lorcan Ronan Sweeny.
The man's frown quickly turned into a smile, and he stroked the back of Luna's hand with is thumb. It didn't matter what they were called; they would grow up and lead unique lives contrary to expectations. After all, they were Luna's sons.