Complex sentence: He may have arrived as an indentured servant to his relative Farquhar McGillivray, a merchant with interests along the southeastern seaboard, as existing records attest that Farquhar McGillivray employed indentured servants and it was not uncommon for such arrangements to be made between relatives.
Split into simpler sentences: He may have arrived as an indentured servant to his relative Farquhar McGillivray, a merchant with interests along the southeastern seaboard. Records attest that Farquhar McGillivray employed indentured servants, and it was not uncommon for such arrangements to be made between relatives.