http://xmlns.com/foaf/0.1/familyName

used by 11:

• artenuevosmedios-gnoss
• gnoss
• green-competitiveness-gnoss
• ineverycrea
• ineverycrea-argentina
• open-data-risp
• proyectoapadrina
• red-uno-internacional-santillana
• rkb-explorer-webconf
• southampton-ac-uk-phonebook
• southampton-ac-uk-pressinfo