Pietro Orseolo

It's believed, without any proof, and without knowing the way, the Orseolo were descendants of the Participazio

• Agnello Participazio, 10th doge of Venice
  • Giustiniano Participazio, 11th doge of Venice [without descent]
  • Giovanni I Participazio, 12th doge of Venice

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This Pietro is not known by Italian encyclopedias, nor from Wikis or MedLands.
Yet the link below rightly reports this as the father of St.Pietro & Domenico.
We hope the author has not confused the election of St. Peter Orseolo, 23rd doge of Venice after Pietro IV Candiano, 22nd doge of Venice (III-21st, II-19th, I-16th) for a noble succession between father and son. We hope he knows something that everyone else doesn't know...

Orseolo family -http://genealogy.euweb.cz/italy/orseolo.html

One Pietro Orseolo had issue:

• A1. Domenico; m.Emilia, dau.of Vitale Candiano
• A2. Saint Pietro I Orseolo, 23th Doge of Venice (976-978) abdicated, +981; m.Felicia Malipiero
  • B1. Pietro II Orseolo, 26th Doge of Venice (991-1008), *961, +1008; m.Maria N
    • C1. Giovanni, *985, +1006; m.Maria, dau.of Romanos Argyropulos, Emperor of Byzantium
      • D1. Bazil, +1006
    • C2. Hicela (Joscella); m.Stjepan of Croatia
    • C3. Otone Orseolo, 27th Doge of Venice (1008-26), abdicated; m.Maria of Hungary (Ilona) (+1026), dau.of Géza of Hungary
      • D1. Pietro, King of Hungary (1044-46) as Pétér, -cr 1038, *1011, +30.8.1059, bur Pécs; 1m: Tuta, dau.of Gf Ruprecht von Regensburg (+after 1046); 2m: 11.4.1055 Judith von Schweinfurt (+2.8.1058)
      • D2. Froizza (? Frowila), +17.2.1071; m.shortly before 1041 Mgve Adalbert I of Austria (+1055)
    • C4. Enrico
    • C5. Felicia
    • C6. Domenico, fl 1032
      • D1. Ugo
      • D2. Pietro
      • D3. Felicia; m.Nicolo Bembo
    • C7. Vitale, Bp of Toscello
    • C8. Orso, Bp of Toscello, Patriarch of Grado, +1045
    • C9. a daughter
    • C10. a daughter
    • C11. a daughter
  • B2. a daughter; m.Giovanni Morosini
  • B3. a daughter; m.Giovanni Gradenigo