The bisho had little or nothing to do with it. the former slaves were purchased from their owners near Washington, d.C. and shipped to Philadelphia. There they came under the guidance of Peter Vanderhorst who lead the entire group to Santo Domingo.
While this has been covered before, and fairly well, let me just say that there was (a) Major culture Shock; (b) terrible illness--malaria and yellow fever that cut through hundreds and perhaps thousands of the new black immigrants.
Many of the survivors were given land in Saman? as an attempt to populate the lands recently conquored with racially similar people. The first "samanenses" were protestant (Methodist), and English speaking, and they remained that way for decades...
The AME church came later..."La Churcha", and place names such as Bethesda and Noroeste, and the family names are just about all that is left of the group.
HB