It is common to find an ancestor’s surname written in several different ways across historical documents. These variations may be clerical errors, phonetic spellings, or genuine alternatives. For example, Christopher Marlowe had his baptism recorded as "Marlow" and on one document signed his name as "Marley".
To record these variations, use the Surname variants field on the Naming tab of the Current Person Other Detail dialog. Enter multiple variants separated by commas.