Diicul alternated civilian offices and command postings in the Wallachian military forces, culminating with his appointment as Spatharios in January 1645.

In 1653 Buicescul was soundly defeated by Lupu and his Cossack allies, whose invasion of Wallachia was only overturned by Prince Matei's stand at Finta.

When the Prince died after illness in early 1655, Șerban managed to outbid Buicescul for the throne, arriving in Târgoviște while his rival was still stranded in Oltenia.

A short truce between them was curbed by Buicescul's alleged participation in conspiratorial intrigues; the Spatharios was deposed, then mutilated, to prevent his candidacy for the throne.

His son Papa returned to Wallachia and held important office; his grandson Diicul II served as Spatharios under Constantin Brâncoveanu.

Also according to Gane, Buicești was actually inherited from Maria, having been an estate of the more ancient Craiovești family, from which both Diicul and Aga Matei descended.

[9] Ionașcu acknowledged the lack of any record detailing Diicul's youth, but proposed that he followed Aga Matei in his perennial battles with Prince Leon Tomșa.

[13] In 1641–1642, he was confirmed as the owner of Priseaca, outside Buicești, while also holding deeds in Vitănești and some other Olt villages; in 1644, he bought himself half of Arcești, in Romanați County.

[15] As summarized by historian Andrea Fehér: "[Buicescul] exhibited serious shortcomings in his character, defects that could not be erased from the chronicles, not even through him founding numerous monasteries.

In his later chronicle of the events, Lupu's loyalist Miron Costin claimed that, in accepting this Prince, Kemény snubbed Buicescul, who had allegedly wanted the Moldavian crown for himself.

[25] Aided by troops from the Cossack Hetmanate, Lupu defeated a large Wallachian force of 9,000 soldiers, commanded by Buicescul, and chased away Ștefan's 300 Moldavian renegades.

Buicescul's own troops were again scattered following a direct confrontation with Tymofiy Khmelnytsky's cavalry at Șoplea,[28] but Prince Matei was able to recover the loss at Finta.

This fueled a search for another heir: Mihai, son of Nicolae Pătrașcu, and Istratie Golescu were considered, but Matei finally selected Buicescul—although the latter was by then middle-aged.

[32] One detailed account, originating with Paul of Aleppo, suggests that Șerban refused to honor the Prince's choice, and never removed his hat if Buicescul was in the room.

With Elena assuming an informal regency, Șerban coordinated a rebellion of the Seimeni mercenaries, and managed to exhaust the Basarab regime.

[36] This resulted in a heated competition for the throne, during which, historian Gábor Kármán notes, Buicescul emerged as a favorite of the Transylvanian Prince, George II Rákóczi.

[37] However, the Spatharios had been called to his country estate by the illness of his son; Șerban, meanwhile, was at Dobreni, allowing him to seize the opportunity and leave for Târgoviște, where the Seimeni imposed him as Prince.

[38] Paul of Aleppo records an important role for the Spatharios during Șerban's investiture, although it is not known if this testimony refers to Buicescul or to his known successor, Hrizea of Bogdănei.

[40] In late 1654 or early 1655, a new Seimeni revolt placed the boyars in mortal danger; Buicescul and his family escaped by fleeing into Transylvania, settling at Corona.

A boyars' letter to Rákóczi, also signed by Wallachian Metropolitan Ignațiu, claimed that the 30,000 thaler Diicul had deposited in Hermannstadt were entirely stolen, in complicity with his nephew Tudor.

[54] Rezachevici believes that Buicescul and Spatharios Udriște Năsturel were assassinated together at Curtea Veche, in July 1659; the new Clucer was Mihai Argetoianu.

[56] Buicescul's eldest son, the Paharnic Papa, born c. 1630–1633,[57] was probably groomed by Rákóczi to take over as puppet ruler of Wallachia, following his father's mutilation—this alliance was superseded in 1655, when Constantin Șerban willingly submitted to Transylvania's leadership.

[62] One document suggests that Diicul had also adopted his nephew and alleged accomplice Tudor, who worked as a tax farmer with the title of Great Căminar.

[65] In the early 1680, Sara was still litigating over her grandfather's confiscated wealth, also obtaining her share of Papa Buicescul's estate in Wallachia.

[75] Having bought himself a new demesne at Bălcești,[76] Diicul II sued his cousin Sára and his nephew Ádám Székely for their share of the Buicescul estate.

[85] The Culcer's descendants into the 18th century include Sára's grandson, Count László Székely, who was an acclaimed contributor to Hungarian literature, as well as a major book collector.

[86] Buicescul's distant memory was by then becoming altered—Count Székely's memoirs include no mention of his great-grandfather, though they dwell on Sára's successive marriages.

[89] Based on such misreadings, Buicescul was spuriously identified by scholar Paul Gore as a patriarch of the Dicescu family in Bessarabia Governorate.