António Maria Vasco de Melo Silva César e Meneses (1851 — 1923) was a Portuguese noble who was the 9th Count of Sabugosa.

A law graduate, diplomat and high official, he was also a distinguished poet and writer of short stories, histories, comedies and poems.

[1][2][3] In 1906 he published Auto da Festa, by Gil Vicente, a work that had fallen into oblivion at the time, based on a rare copy he found in the library of his palace.

He also published, based on a text found in his library, the work Auto da Natural Invenção by the poet António Ribeiro Chiado.

In the Chamber he was a member of several committees, with emphasis on those related to business and foreign trade, trying to identify new markets for traditional Portuguese exports, such as wine and cork.

He was a member of the Royal Academy of Sciences in Lisbon, the Association of Portuguese Civil Architects and Archaeologists and the Almeida Garrett Literary Society.