TreeSeek 15 Generation Pedigree Chart | Blank Genealogy Forms for Family History and Ancestry Work Most popular selling jumbo pedigree chart ever! See all ancestral lines at once: size 25 x 27. Quality paper. Back of chart contains extra space to go up to a total of 20 generations or more. Buy 2 charts and place them side by side to see all 15 generations without turning charts over. 100% satisfaction money back guarantee. Conveniently folds to fit into a 3 ring binder. Free bonus: online fillable and downloadable 6 generation pdf chart. Populate your pedigree online.