We could probably shorten the distance to the center with little research...
1. Amílcar Cabral's wife, Maria Helena de Ataíde Vilhena ancestors seams to be connected to the majorat of Casas Novas, so must be a shorter path through Portuguese aristocracy. There is a published genealogical study about them.(1)
2. A French shorter path?
François Louis Armand Fourcheut de Montrond .b1844/1/8 in Grenoble(2) was a french aristocrat that established himsel in Fogo, Cabo Verde. He had 30 children from 7 mothers.
"Odjo Branco": Documentary about Armand de Montrond and his descendants.(3)
(1) Calvão Borges, José Guilherme. “Morgados de Casas Novas.” Raízes & Memórias, no. 10,11 (n.d.). https://www.apgenealogia.pt/revista-raizes-e-memorias/.
(2) https://www.barrosbrito.com/18607.html
(3) "Odjo Branco": Documentary about Armand de Montrond and his descendants:
1. https://www.youtube.com/watch?v=hd1-bS1iGvc
Première partie de la saga d'Armand de Montrond sur l'île de Fogo au Cap Vert et de sa descendance sur trois continents.
2. https://www.youtube.com/watch?v=mV-uvfp1P_E
Deuxième partie...
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Sn.