Question: Who was the elder son of Sylvester Stallone that also helped co find Grindhouse Releasing?

Context paragraphs:
Grindhouse Releasing: Grindhouse Releasing is a Hollywood-based independent cult film distribution company led by film editor Bob Murawski and co-founded by Sage Stallone.  Grindhouse digitally remasters, restores, and produces bonus materials and video documentaries for cult film DVDs and Blu-rays which it distributes on the CAV label.

Baron Blayney: Lord Blayney, Baron of Monaghan, in the County of Monaghan, was a title in the Peerage of Ireland.  It was created in 1621 for the soldier Sir Edward Blayney.  He was succeeded by his son, the second Baron.  He was killed at the Battle of Benburb in 1646.  His younger son, the fourth Baron (who succeeded his elder brother), represented County Monaghan in the Irish House of Commons.  His elder son, the fifth Baron, was attainted by the Parliament of James II for supporting William of Orange.  He had no sons and was succeeded by his younger brother, the sixth Baron.  He was Governor of County Monaghan.  His son, the seventh Baron, was Lord Lieutenant of County Monaghan.  He was succeeded by his elder son, the eighth Baron.  He was a clergyman and served as Dean of Killaloe.  He had no surviving children and was succeeded by his younger brother, the ninth Baron.  He was a Lieutenant-General in the Army.  His younger son, the eleventh Baron (who succeeded his elder brother), was also a Lieutenant-General in the Army and fought in the Peninsular War.  Lord Blayney also represented the rotten borough of Old Sarum in Parliament.  His son, the twelfth Baron, sat as Conservative Member of Parliament for County Monaghan and was later an Irish Representative Peer from 1841 until his death.  On his death in 1874 the title became extinct.

Vic (film): Vic is a 2006 American short film drama.  It is the directorial debut of Sage Stallone, son of Sylvester Stallone.  The film stars Clu Gulager, Tom Gulager and Miriam Byrd-Nethery with cameos by Carol Lynley, John LaZar, and John Phillip Law.  Sage Stallone won the 2006 Boston Film Festival “Best New Filmmaker” award for this film.  The film had its world premiere at the 2006 Palm Springs International Festival of Short Films, where the cast and filmmakers were in attendance.

Rocky V: Rocky V is a 1990 American sports drama film.  It is the fifth film in the "Rocky" series, written by and starring Sylvester Stallone, and co-starring Talia Shire, Stallone's real-life son Sage, and real-life boxer Tommy Morrison, with Morrison in the role of Tommy Gunn, a talented yet raw boxer.  Sage played Robert Balboa, whose relationship with his famous father is explored.  After Stallone directed the second through fourth films in the series, "Rocky V" saw the return of John G. Avildsen, whose direction of "Rocky" won him an Academy Award for Best Directing.

Over the Top (film): Over the Top is a 1987 American sport drama film starring Sylvester Stallone.  It was produced and directed by Menahem Golan, and its screenplay was written by Stirling Silliphant and Stallone.  The original music score was composed by Giorgio Moroder.  The main character, played by Stallone, is a long-haul truck driver who tries to win back his alienated son while becoming a champion arm wrestler.

The Expendables 3: The Expendables 3 (sometimes stylized as The Expendables III) is a 2014 American action film directed by Patrick Hughes and written by Creighton Rothenberger, Katrin Benedikt and Sylvester Stallone.  It is the third installment in "The Expendables" film series and the sequel to "The Expendables" (2010) and "The Expendables 2" (2012).  The film features an ensemble cast, including Sylvester Stallone, Jason Statham, Antonio Banderas, Jet Li, Wesley Snipes, Dolph Lundgren, Kelsey Grammer, Randy Couture, Terry Crews, Kellan Lutz, Ronda Rousey, Glen Powell, Victor Ortiz, Mel Gibson, Harrison Ford, and Arnold Schwarzenegger.

Rambo: First Blood Part II: Rambo: First Blood Part II (also known as Rambo II or First Blood II) is a 1985 American action film directed by George P. Cosmatos and starring Sylvester Stallone, who reprises his role as Vietnam veteran John Rambo.  It is the sequel to the 1982 film "First Blood", and the second installment in the "Rambo" film series.  Picking up where the first film left, the sequel is set in the context of the Vietnam War POW/MIA issue; it sees Rambo released from prison by federal order to document the possible existence of POWs in Vietnam, under the belief that he will find nothing, thus enabling the government to sweep the issue under the rug.  In addition to Stallone, Richard Crenna reprises his role as Col. Samuel Trautman, with Charles Napier, Steven Berkoff, Julia Nickson, Martin Kove, George Cheung, and Andy Wood also included in the cast.

An American Hippie in Israel: An American Hippie in Israel, also known as Ha-Trempist (from Hebrew הטרמפיסט, "The Hitch-hiker"), is a 1972 Israeli metaphorical counter-culture film written and directed by Amos Sefer starring Asher Tzarfati.  Many have cited this film as one of the worst films ever made.  Once thought lost, it was rediscovered decades later by the cult film enthusiasts at Grindhouse Releasing who have digitally restored the film and presented it in Blu-ray and DVD.

The Expendables 2: The Expendables 2 is a 2012 American ensemble action film directed by Simon West, written by Richard Wenk and Sylvester Stallone and based on a story by Ken Kaufman, David Agosto and Wenk.  Brian Tyler returned to score the film.  It is the sequel to the 2010 action film "The Expendables", and stars Sylvester Stallone, Jason Statham, Jet Li, Dolph Lundgren, Chuck Norris, Terry Crews, Randy Couture, Liam Hemsworth, Jean-Claude Van Damme, Bruce Willis, and Arnold Schwarzenegger.  The story follows the mercenary group known as "the Expendables" as they undertake a seemingly simple mission which evolves into a quest for revenge against rival mercenary Jean Vilain, who murdered one of their own and threatens the world with a deadly weapon.  It is the second installment in "The Expendables" film series.

Sage Stallone: Sage Moonblood Stallone (May 5, 1976 – July 13, 2012) was an American actor, film director, film producer, and film distributor.  He was the elder son of Sylvester Stallone.

Supporting paragraphs: Grindhouse Releasing Sage Stallone
Answer: Sage Stallone