Robert was a French-born prelate in the Kingdom of Hungary in the first decades of the 13th century. He was Archbishop of Esztergom between 1226 and 1239 and Bishop of Veszprém from 1209 till 1226. He played a decisive role in the establishment of the short-lived Diocese of Cumania. He was sharply opposed to the employment of Jews and Muslims in the administration of the royal revenues. He even put Hungary under interdict to force Andrew II of Hungary to dismiss his non-Christian officials.

The Archdiocese of Esztergom–Budapest is a Latin Church archdiocese and primatial seat of the Catholic Church in Hungary and the metropolitan see of one of Hungary's four Latin Church ecclesiastical provinces.