"Is. Tack ‘Davis’ on with hyphen if want to be formal. Davis is First Husband, dead fifty years. Is family name and all our wives are ‘Gospazha Davis’ hyphened with every male name in Davis line plus her family name. In practice Mum is only ‘Gospazha Davis’—can call her that—and others use first name and add Davis if they write a cheque or something. Except that Ludmilla is ‘Davis-Davis’ because proud of double membership, birth and option."