Alderman had a wife named Kate, information which is only mentioned in a land transaction in the Portsmouth, Rhode Island deed book.
Alderman also visited Portsmouth with Benjamin Church to set up the apprenticeship of an Indian woman and her son to a local weaver.
The woman was being punished for her support of Metacomet in the recent hostilities, and was apprenticed to William Wodell, a weaver, for life.
The name "Isaac" also appears in a land transaction in Barnstable County from several Sacconett Indians, indicating he may have been detained behind the Sippican line for some time after King Philip's War.
In 1800, an Indian man named James Thomas died in Milton, Massachusetts, claiming to be Alderman's grandson.