Question: How many sons did "The Hitman"'s father have?

<P0-S0> Bret Sergeant Hart (born July 2, 1957), better known by the ring name Bret "The Hitman" Hart, is a Canadian-American retired professional wrestler, retired amateur wrestler, writer and actor. <P0-S1>  A member of the Hart wrestling family and a second-generation wrestler, he has an amateur wrestling background, wrestling at Ernest Manning High School and Mount Royal College. <P0-S2>  A major international draw within professional wrestling, he has been credited with changing the perception of mainstream North-American professional wrestling in the early 1990s by bringing technical in-ring performance to the fore. <P0-S3>  Hart is widely regarded as one of the greatest professional wrestlers of all time; Sky Sports noted that his legacy is that of "one of, if not the greatest, to have ever graced the squared circle". <SEP> <P1-S0> In the complex mythology of William Blake, Urizen is the embodiment of conventional reason and law. <P1-S1>  He is usually depicted as a bearded old man; he sometimes bears architect's tools, to create and constrain the universe; or nets, with which he ensnares people in webs of law and conventional society. <P1-S2>  Originally, Urizen represented one half of a two-part system, with him representing reason and Los, his opposition, representing imagination. <P1-S3>  In Blake's reworking of his mythical system, Urizen is one of the four "Zoas" that result from the division of the primordial man, Albion, and he continues to represent reason. <P1-S4>  He has an Emanation, or paired female equivalent, Ahania, who stands for Pleasure. <P1-S5>  In Blake's myth, Urizen is joined by many daughters with three representing aspects of the body. <P1-S6>  He is also joined by many sons, with four representing the four elements. <P1-S7>  These sons join in rebellion against their father but are later united in the Last Judgment. <P1-S8>  In many of Blake's books, Urizen is seen with four books that represent the various laws that he places upon humanity. <SEP> <P2-S0> Herleif (Latinized as Herleifus) was one of the earliest legendary Danish kings according to Arngrímur Jónsson's Latin summary of the lost Skjöldunga saga. <P2-S1>  He was the son of Frodo I and the father of Havardus "hinn handramme" and Leifus "hinn frekne". <P2-S2>  He supposedly "left behind many sons" but their names are not recorded and they seem to be excluded from the royal line of succession. <SEP> <P3-S0> The Hart wrestling family, sometimes known as the Hart dynasty is a mainly Canadian family with a significant history within professional wrestling. <P3-S1>  The patriarch of the family was wrestling legend Stu Hart (1915–2003). <P3-S2>  An amateur and professional wrestling performer, promoter and trainer, Stu not only owned and operated his own wrestling promotion, Stampede Wrestling, but also trained some of the most well known and successful stars in wrestling history including Superstar Billy Graham, Fritz Von Erich, Edge, Chris Jericho, Chris Benoit, Christian and his sons Bret Hart and Owen Hart. <P3-S3>  All of Stu's eight sons were wrestlers and two of them, Bret and Owen, achieved considerable fame and success in the World Wrestling Federation (WWF, now WWE), with many of the WWF's biggest storylines in the mid-1990s being built around Bret and Owen and their brothers-in-law.