Continuing from Generations J-L (not necessary to play first)
A family where every generation uses the next consecutive letter (excluding people marrying into the family after gen 1).
DW: Layla, Lee, Lillian, Lindsey, Louisa, Lyra
DH: Alexander, Berend, Lewis, Robert, Vincent, Wallace
-DS: Marshall, Matthew, Maverick, Milo, Morgan, Mycroft
-DD: Maeve, Marley, Martha, Millicent, Minerva, Molly
-DS: Malcom, Mark, Maxwell, Merlin, Michael, Miller
-DS:
-DW: Amélie, Belle, Clarisse, Daphne, Edeline, Frances
–DD: Nadine, Nancy, Nathalie, Nicole, Noël, Noémie
–DD:
–DW: Alexandria, Cecily, Ivy, Ruth, Stella, Therese
—DS: Octave, Odin, Olivier, Orion, Orson, Oswald
—DD: Océane, October, Odette, Olympe, Opal, Ottilie
-DD:
-DH: Cian, Daniel, Gallagher, Rory, Thomas, William
–DD: Nadia, Naomi, Nell, Niamh, Nora, Nox
–DD:
—DD: Oakley, Octavia, Odile, Olivia, Onyx, Orla
-DS:
-DH: Ethan, Isaac, Preston, Stephen, Turner, Victor
–DS: Ned, Neil, Neville, Nico, Noah, Nolan
–DS: Nathan, Nelson, Niall, Nicholas, Nixon, Noble
–DS:
–DW: Faith, Ginerva, Halle, Ruby, Samantha, Tara
—DD: Odessa, Olive, Olwen, Oona, Ophelia, Ottoline
–DS:
–DW: Clare, Edith, Gwen, Jean, Rachel, Vivian
—DS: Oberon, Orville, Oscar, Otto, Owen, Oz