Name by which Chesku and later Hob referred to Anna Grant. No explanation was given as to why she was known to them as Sula. It may have been a new identity, or a name taken through marrying Chesku, although there is no evidence for that. Servalan, when they met, did not address her by any name at all.
According to Paul Darrow's book "Avon: A Terribile Aspect", her full name is Anna Sula Grant. She has an older brother Del Grant. Her adopted father was Pel Grant.