@MichaelRybkin No, because when there's a direct object for the verb, the past participle agrees with that. Depending on the context of use, that could either be sept maris or just l'un (i.e., she married seven and this is one of them; or there are seven random husbands, of whom one is hers). So the agreement would either be -s for m.pl. or nothing for m.sg.
Whereas for intransitive verbs whose auxiliary is être (Dr Mrs Vandertramp), the past participle agrees with the subject: Elle est tombée.
