Antoninus Pius (; born 19 September 86AD – died 7 March 161AD ), also known as Antoninus, was Roman Emperor from 138AD to 161AD.

The Roman Empire during the reign of Antoninus Pius.

Scholars place Antoninus Pius as the leading candidate for fulfilling the role as a friend of Rabbi Judah the Prince.

He had a close friendship with " Antoninus ", possibly Antoninus Pius, who would consult Rabbi Judah on various worldly and spiritual matters.

Arch of Antoninus Pius in Sbeïtla, Tunisia.

Antoninus in many ways was the ideal of the landed gentleman praised not only by ancient Romans, but also by later scholars of classical history, such as Edward Gibbon or the author of the article on Antoninus Pius in the ninth edition of the Encyclopædia Britannica:

The family of Antoninus Pius and Faustina the Elder also represents one of the few periods in ancient Roman history where the position of Emperor passed smoothly from father to son.

* Historia Augusta, The Life of Antoninus Pius, English version of Historia Augusta Note that the Historia Augusta includes pseudohistorical elements.

* Weigel, Richard D., " Antoninus Pius ( A. D. 138 – 161 )", De Imperatoribus Romanis

* Hüttl, W. Antoninus Pius vol.

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