Your landlady is a formal treatment pronoun used in Portuguese to refer to authorities in general.
Typically, “your landlady” is often used in formal communications, primarily addressed to authorities or in business and official correspondence.
Politicians, directors, bosses and other people with prestigious positions are some examples where the use of “your landlady” is appropriate.
It is also common for this treatment pronoun to be in abbreviated form. THE your lordship's abbreviation is V.S.ª.
Example:"Did you receive the document?" or "Did you receive the document?".
However, it is worth remembering that Your Lordship should only be used when the treatment is made directly to the authority in question. When this is only mentioned in the 3rd person, the correct application of the treatment pronoun is your ladyship.
Also known as axionyms, the treatment pronouns are characterized by being more cultured and courteous ways of mentioning or referring to a particular person.
Your Lordship's plural is your ladies, and its abbreviation is V.S.as.
Learn more about the meaning of Pronouns treatment.