Pietro IV Candiano, 22nd doge of Venice

-http://en.wikipedia.org/wiki/Pietro_IV_Candiano

Pietro IV Candiano (died 976) was the twenty-second (traditional) or twentieth (historical) Doge of Venice from 959 to his death. He was the eldest son of Pietro III Candiano, with whom he co-reigned and whom he was elected to succeed.

By associating his son with him in the dogeship, Pietro III was trying to establish a hereditary monarchy in Venice. This incurred the wrath of the people, who, in a popular assembly, tried to kill the doge. Pietro IV intervened to save his father's life and exiled him with a small group of followers to Ivrea, where the Margrave Guy took him to his father, the king of Italy, Berengar II.

Pietro III then participated with Guy in an expedition against Theobald II, Duke of Spoleto, and gained the support of Berengar for an assault on Venice. At the head of a band of partisans, Pietro IV defeated his father, but did not kill him. He was then elected sole doge.

-http://www.conoscerevenezia.it/?p=20536

(a) PIETRO Candiano [IV] (-murdered Summer 976, bur Sant' Ilario). The Chronicon Venetum records that "Petrus dux" had three sons, of whom "unum nomine Petrum", whom his father associated in the Dogeship[58]. He was banished after quarrelling with his father. He enlisted in the army of Guido Marchese di Ivrea, who was crowned King of Italy in 950, during which he attacked Venice. He was elected Doge in 959 in succession to his father. "Petro…Duce…cum Vitale…Patriarcha filio suo" abrogated trading agreements with the Saracens by charter dated Jul 971, signed by "…Dominicus Urseolo, Petrus Urseolo…"[59]. The Venetians rebelled against him in 976 when he ordered them to defend his personal interests in the Ferrarese. Numerous buildings were destroyed or damaged by fire in their attempts to expel Pietro from his palace.

m firstly (divorced) ---.

m secondly WALDRADA of Tuscany, daughter of UBERTO Marchese of Tuscany & his wife Willa di Spoleto (-after 976). The Chronicon Venetum names "Hugonis marchionis sororem Hwalderada" when recording her marriage to Pietro[60]. She brought lands in Friuli, the March of Treviso, Adria and the Ferrarese to Venice as her dowry. She escaped when her husband and child were murdered. She sought refuge at the German Imperial court from where she claimed the return of her dowry from Venice, for which she was given full financial compensation from the proceeds of a tithe levied on all Venetians.

  Pietro & his first wife had one child: