Continuing from Generations D-F (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: Fable, Faith, Fallon, Fern, Flora, Francesca
DH: Abel, Conrad, Joseph, Patrick, Theodore, Zachary
-DD: Gabrielle, Gaia, Galilea, Gillian, Grace, Gwyneth
-DS: Gabriel, Gallagher, Gavin, George, Gerard, Gilligan
-DD:
-DH: Bennett, David, Jacob, Lincoln, Marshall, Riley,
–DD: Hailey, Harlow, Hazel, Heidi, Henrietta, Holly
–DD:
–DW: Katherine, Nora, Olive, Petra, Quinn, Samantha
—DD: Iben, Idris, Indiana, Isaac, Isaias, Iver
—DS: Ingrid, Io, Ireland, Iris, Isabelle, Ivana
-DS:
-DW: Ashley, Joy, Margot, Tiana, Victoria, Willa
–DS: Harper, Harris, Henry, Hirsch, Holden, Hugh
–DD: Halle, Hadassah, Harmony, Harriet, Hope, Hyacinth
–DS:
–DW: Blair, Cadence, Ruby, Uma, Xanthippe, Winslow
—DS: Ian, Ibrahim, Icarus, Ignatius, Irving, Isaiah
–DD:
–DH: Clyde, Maxwell, Peter, Rupert, Thomas, William
—DD: Imogen, Irene, Isabella, Isla, Isolde, Ivy