The subject of lineage is brought up occasionally; here is our lineage as accurate as it can be rendered.
This is a "teaching lineage" not a hereditary one. It shows the line of instruction from one Sensei to the next.
.Saigo Chikamasa, 1829-1905,
OshikiuchiTakeda Sogaku, 1858-1943,
AikijujutsuUeshiba Morihei, 1883-1969,
Aikido Kaiso, No rank given - MudanTomiki Kenji, Tomiki-ryu,
1900-1979 (Ueshiba Morihei, Kano Jigaro) Kaiso,
8th Dan under both Kano Sensei and Ueshiba SenseiKarl Geis, 1933-Present,
Karl Geis Ryu (Kihara Aikido, Kodokan Judo) Kaiso, Hanshi, 9th Dan (Tomiki Kenji)
Karl W Marx, 1936-Present, Keichu Do (Geis Sensei) Shodai Soke,
9th Dan Chuck Clark, 1947-Present, Jiyushinkai Aikido (Geis Sensei) Kaiso, Hanshi
9th Dan Gary W Ducote, 1957-2012, Shisei Ryu Aikibudo Kaiso,
8th Dan (Karl W. Marx, (9D) Hanshi
-- Clark, (9D) Hanshi Scudeiri, (9D) Hanshi
-- Col Hobbs, (9D) Hanshi)
Jeff Lane Soke 2012, 7D promoted by Kaiso Gary Ducote