Nope, as I described above, I'm not going from A, to B, to C. It's more like A, AB, B, BC, C, CD, D, etc.

I'm going like this:
Generation One: Annabel & Arthur and 6 kids' names that start with A
Generation Two: Athena & Bacchus and only one child, Bellona
Generation Three: Bellona & Bran and kids' names that start with B
Generation Four: Basil & Camellia and only one child, Cerise
Generation Five: Cerise & Calvin have 6 kids' names that start with C

So for generation 6, their child will marry someone's name who starts with "D" and have one child whose name starts with D to begin the D family. That's going to take twice as many as 26 generations doing it that way.