There are two copies of the actual genealogy, by two members of the Sung clan from different branches of the family. We do share a common ancestor (numbered seventeeth from an ancestor living in the Southern Song dynasty). This is Sung4 Ngiuk6 Yin1, ten generations before me. He arrived and founded our local clan in KukPo Village.
The running text extends from pages 1 through to page 44.
The first set of the genealogy begins on page 45, through to page 54, with the name of the calligrapher who is a second cousin thrice removed from me. This work was finished by Sung4 Yun2 Shiak5 in the summer of 1927 (written as the eighteenth year of the Chinese republic, a couple of years before my father was born). We share the common ancestor numbered nineteenth.
The second set begins at page 55 which is a portion of the cover with the name of the calligrapher there. The remaining pages take up his family lineage.
I share a common ancestor with the second calligrapher, who is numbered twenty second. I am now the twenty seventh generation from the Song Dynasty ancestor.