Hicela Svetislavić, of Croatia

-http://fmg.ac/Projects/MedLands/VENICE.htm#HicelaOrseoloMStepanCroatia

2. HICELA Orseolo . The Chronicon Venetum names "Hicelam" as eldest of the four daughters of "Petrus dux", naming her husband "Stefano Sclavorum regis filio"[97]. A charter dated Jul 1079 records a judgment against the abbey of Cluny and in favour of the monastery of SS. Trinità e S. Michele di Brondolo relating to property at Fogolana, and recalls sales of property by "Anna comitissa relicta domini Vidonis comitis" to "Petrum ducem Venetiarum filium bonum [memorie] Petrus dux" and by "Vitalis et Aichelda filii boni [memorie] Petr ducis" to "fratrum eorum Petrum ducem Venetiarum"[98].

m ( after [1000] ) STJEPAN of Croatia, son of SVETOSLAV King of Croatia. After his father recognised Venetian overlordship over Dalmatia [1000], Stjepan was sent as a hostage to Venice, where he married the Doge's daughter[99]. After the fall from power of the Orseolo family in 1024, Stjepan left Venice to find refuge in Hungary which granted him Slavonia as an appanage[100].

-https://hr.wikipedia.org/wiki/Hicela_Orseolo

Hicela (Joscella, Icella) Orseolo je bila hrvatska kraljica, supruga hrvatskog kralja Stjepana I.. Kći mletačkog dužda Petra II. Orseola[1] i Marije, unuka Petra I. i Felicite Malipiero (ili Badoer).[2][3][4]

Brak je dogovoren u Trogiru koji je došao pod mletačku vlast. Mletački se dužd Petar II. Orseolo susreo s hrvatskim kraljem Svetoslavom Suronjom.[nedostaje izvor]

Zna se za Hicelina brata Ivana, Otona, Orsa, Vitelea, Enrica i sestru Felicitu i još dvije sestre kojima se ne zna imena.[2]

...Hicela (Icella) venne fatta sposare a Stefano figlio del re di Croazia, Cresimiro III ‘Surigna’ ...
-http://www.treccani.it/enciclopedia/pietro-ii-orseolo_(Dizionario-B...

 /!\ Treccani don't seem to distinguish two distinguished brothers, kings of Croatia, who both call their son Stjepan: 

• Kresimir III
  • Kralj Stjepan I (Stjepan III Dobroslav) Trpimirović, of Croatia = /!\ Hicela (Treccani-Wiki)
• Svetolav "Suronja"
  • Stjepan Svetislavić = Hicela (MedLand-Geni)

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Note: She was not married to Kralj Stjepan I (Stjepan III Dobroslav) Trpimirović, of Croatia, but she was married to Stjepan Svetislavić, the son of Svetislav "Suronja" Trpimirović, king of Croatia.
At wikipedia and Treccani source written wrong information, at MedLands is correct, she was married to Stjepan Svetislavić son of Svetislav "Suronja" Trpimirović, king of Croatia, a Kralj Stjepan I (Stjepan III Dobroslav) Trpimirović, of Croatia was married to Maria, daught. of Ban Stjepan. Two different person with the same name Stjepan were wrongly identified in both that sources.