Question: When was the actor who played the partner to Detective Danny "Danno" Williams born?

Context paragraphs:
Barry Williams (rugby league): Barry Williams born in Great Broughton, is a professional rugby league footballer who played in the 1990s, playing at representative level for Wales, and Cumbria, and at club level for Carlisle, and Workington Town, as a hooker , i.e. number 9.  A wonderfully talented ball-playing forward, Williams played a prominent role as Carlisle beat Castleford in the 1995–96 Regal Trophy match.  A season earlier, he had helped Workington finish ninth in the old first division.  In 1997 he turned down a move to Leeds Rhinos in order to have another spell at Town.

Herb Williams (American football): Herbert Earl Williams born (April 30, 1958) is a former American football defensive back who played in three seasons with of the National Football League; One with the San Francisco 49ers then two with the St. Louis Cardinals.  He had previously played college football at Southern University for the Southern Jaguars football team.

Tim O'Kelly: Tim O'Kelly (born Timothy Patrick Wright, March 12, 1941 – January 4, 1990) was an American actor best known for playing the homicidal sniper Bobby Thompson in the Peter Bogdanovich cult film "Targets" (1968).  He was cast because of his boy-next-door looks and his similarity in appearance to killer Charles Whitman, on whom the character was loosely based.  O'Kelly also played Detective Danny "Danno" Williams in the pilot episode of "Hawaii Five-O", but was replaced by James MacArthur.

Broadway Is My Beat: Broadway Is My Beat, a radio crime drama, ran on CBS from February 27, 1949 to August 1, 1954.  With Anthony Ross portraying Times Square Detective Danny Clover, the show originated from New York during its first three months on the air.  For the remainder of the series, the role of Detective Danny Clover was portrayed by Larry Thor.  The series featured music by Robert Stringer, and scripts by Peter Lyon.  John Dietz directed for producer Lester Gottlieb (eventually succeeding him as producer).  Bern Bennett was the original announcer.

Gordon Stretton: Gordon Stretton (June 5, 1887 – 1982), born William Masters, To Ann J Masters Nee Williams Born 1862 was a Welsh-African-descended drummer from Liverpool, who first gained fame in the 1910s and later became one of the first Liverpool-based musicians to gain international acclaim.  He played with Charlie Chaplin in the "Lancashire Lads Dancing Troupe" and eventually performed in locales including London and Paris, before settling in Buenos Aires, Argentina where he lived from the late 1920s after being hired by businessman Augusto Alvarez to act in one of the local entertain companies, at the cinema theatre "Select Lavalle".  He died in 1982.

Steve McGarrett: Steve McGarrett is a fictional character from "Hawaii Five-O" who serves as the leader of the Hawaii Five-0 (5−0) crime task force.  McGarrett was originally played by Jack Lord and also by Alex O'Loughlin in the remake.  He is partner to Detective Danny "Danno" Williams.

Hugo Williams: Hugo Williams born Hugh Anthony Mordaunt Vyner Williams is a British poet, journalist and travel writer.  He was born on 20 February 1942.

Scott Caan: Scott Andrew Caan (born August 23, 1976) is an American actor.  He currently stars as Detective Danny "Danno" Williams in the CBS television series "Hawaii Five-0" (2010–), for which he was nominated for a Golden Globe Award.  Caan is also known for his recurring role as manager Scott Lavin in the HBO television series "Entourage" (2009–2011).  He was also a part of 1990s rap group The Whooliganz with The Alchemist.  The duo went by the names Mad Skillz and Mudfoot, respectively.

Johnny Williams (rugby player, born 1982): Johnny Williams born 29 December 1982 in Rotherham, Yorkshire, England is a rugby union player for Newcastle Falcons in the Guinness Premiership.  Johnny Williams' position of choice is as a prop.

Jack Lord: John Joseph Patrick Ryan (December 30, 1920 – January 21, 1998), best known by his stage name, Jack Lord, was an American television, film and Broadway actor and director and producer.  He was known for his starring role as Steve McGarrett in the CBS television program "Hawaii Five-O", which ran from 1968 to 1980.

Supporting paragraphs: Jack Lord Steve McGarrett
Answer: December 30, 1920