[2] The last important political event of 1848 in which Pușcariu took part was the December assembly at Sibiu, convoked by Metropolitan Andrei Șaguna in order to discuss the problems faced by the Romanian nation in a Transylvania considered "pacified" by General Anton von Puchner.

In early 1849, while armed confrontations against Székely forces took place nearby, Pușcariu was able to exercise his administrative functions until Făgăraș was occupied by Józef Bem's troops in March.

[4] He took part in the national assembly of Romanians held at Sibiu in January 1861, serving as secretary; the meeting asked for enhanced rights for the community.

[7] In 1867, following the creation of Austria-Hungary, he became an adviser on matters pertaining to the Orthodox Church at Hungary's Ministry of Religious Affairs and Public Education in Budapest.

[9][10] In 1864, thanks to his bureaucratic, administrative and judicial service, Pușcariu was awarded the Order of the Iron Crown, third class, allowing him and his descendants to use the title of knight.

Despite these arguments, passivism, a withdrawal from the political life of the new dualist state, was adopted as an official strategy by a wide margin, and its adherents attacked Pușcariu in their newspapers.

[14] During the association's first general meeting, he delivered a speech underlining the historic value of documents regarding the Romanian noble families of Transylvania, Banat, Crișana, Maramureș and Bukovina.

Pușcariu was also involved in the Romanian cultural and church life of Budapest, developing close friendships with community leaders and promoting the construction of a theater.

[14] Elected an honorary member of the Romanian Academy in 1877, Pușcariu rose to titular status in 1900, participating in the organization's general meetings until the end of his life.

During his administrative career, Pușcariu was preoccupied by the politics and law of Transylvania, publishing a dictionary of official, bureaucratic terms in Romanian in 1860, with a new edition in 1863.

[15] The genesis of the project was his ASTRA appeal of 1862, but it lay largely dormant for three decades, and was only taken up again in earnest after 1890, by which time new scholarly material had been written on the topic, and old documents re-edited.

[16] His maiden speech to the academy, "Ugrinus—1291", focused on history, aiming to rebut Robert Rösler's theory that the ancestors of the Romanians migrated northwards from the south-Danubian area.

Based on preserved tradition, he insisted that a distant ancestor, Iuga, left Maramureș for Moldavia during the reign of Dragoș, after which the family extended into Bessarabia.