Well quite the opposite of excommunication.
Saul Solomon (1775 - 1850) became ill and was put ashore on the Indian Ocean island of St. Helena. He became the leading merchant and ships purveyor on the island and an intimate of Napoleon during his years of exile there. His nephew, also Saul Solomon (d. 1892), was educated in Cape Town and became the government printer and a leading newspaper publisher. Although tiny in stature, he was an influential member of the Cape legislator and its most effective debater. He married a non-Jew and was baptized. Other members of the family, all Christians, played a prominent part in South African life, and included a chief justice and the South African high commissioner in London.