Leonard Francis Shackleton was born in
Bradford, England on 3 May 1922 to Leonard and Irene Shackleton; his father was a self-employed painter and decorator and his mother was a housewife. He was the elder brother to Irene and John; John went on to sign for
Sunderland, though never played a first team game and quit the game to become a chiropodist and tennis coach. Shackleton attended Carlton High
Grammar school, and became the first Bradford schoolboy to represent England schoolboys when he scored two goals in a 6–2 victory over Wales schoolboys; also in the team that day was future Sunderland teammate
Dickie Davis.
Early career Despite his family being keen
Bradford City supporters, Shackleton signed amateur forms with
Bradford Park Avenue after being signed by manager
Billy Hardy. Bradford PA permitted him to play for Kippax United in the
Leeds League. Arsenal permitted him to play for
Enfield in the
Athenian League, and he in fact only represented Arsenal twice in reserve team fixtures in the
Southern League. He was released by Arsenal in May 1939 and told by Allison that he was too small to succeed as a footballer, and should find other employment. Following this disappointment he took a job at London Paper Mills in
Dartford, and turned out for the
factory's works team in the
Kent League.
Bradford Park Avenue Shackleton returned to his hometown upon hearing of the outbreak of
World War II and took up employment assembling aircraft radios for
GEC, at which point he rejoined Bradford Park Avenue as an amateur after being invited to the
Park Avenue Stadium by manager
David Steele. He turned professional at the club shortly before Christmas 1940 and received a £10 signing-on fee, which the cash-strapped club had to pay in instalments. In the wartime leagues he scored a total of 171 goals in league and cup 209 appearances for Bradford PA. He became a
Bevin Boy in order to avoid his call-up for
national service in 1945 as he did not want to miss the resumption of
the Football League, but found the experience of
coal mining terrifying and gruelling. He began to avoid his shifts in the pits, and so was called into the
Royal Air Force, where he served the remainder of his national service. He scored four goals in seven
Second Division matches at the start of the
1946–47 season, but left the club in October 1946 after growing tired of heckling from his own supporters who did not appreciate his individualist style.
Newcastle United In October 1946, Shackleton was sold to Second Division side
Newcastle United for a £13,000 fee. He was sold as a direct replacement for
Albert Stubbins, who had been sold from Newcastle to
Liverpool for the same fee. He scored six goals on his debut in Newcastle's 13–0 defeat of
Newport County at
St James' Park on 5 October, with three of his goals coming within the space of just 155 seconds. However his return to Park Avenue in his fourth game for Newcastle was not a happy one, as he had a penalty saved by former teammate
Chick Farr in a 2–1 defeat to Bradford PA. The "Magpies" boasted a devastating forward line of
Jackie Milburn,
Roy Bentley,
Charlie Wayman, Shackleton, and
Tommy Pearson, and totalled 95 league goals in the
1946–47 season, though their tally of 62 goals conceded and 13 defeats left the club having to settle for fifth place. They did though reach the semi-finals of the
FA Cup, where they were beaten 4–0 by
Charlton Athletic. After the semi-final game he and club captain
Joe Harvey went on strike over housing issues; the club's board eventually relented and granted Shackleton the house they had initially promised him, though to save face told the press that Harvey and Shackleton had been in the wrong and had apologised. He further came into conflict with the club at Christmas 1947, when he and goalkeeper
Jack Fairbrother refused to join the squad on a scouting party on opponents Charlton Athletic, who they faced later that season in the third round of the FA Cup. Unhappy with the club, he handed in a transfer request, which was granted.
Sunderland In February 1948, Shackleton was sold to
Newcastle's rivals Sunderland for a
British transfer fee record of £20,050. He was one of a number of a squad full of big name players signed by the club for a total outlay of around £250,000 during the post-war era, which earned Sunderland the nickname of the 'Bank of England' club. However Shackleton made his debut in a 5–1 defeat to
Derby County at the
Baseball Ground, and Sunderland finished just four points above the relegation zone – at that time the club had never been relegated out of the
First Division. He later admitted that the players were more a collection of talented individuals than a true team, and that "it takes time to harness and control a team of
thoroughbreds. It took time to achieve the blend at
Roker Park". Shackleton and centre-forward
Trevor Ford would never build any kind of relationship on or off the pitch however, and Ford once threatened to never play in the same Sunderland team as Shackleton until he was forced to back down by manager
Bill Murray. Ford was sold on to
Cardiff City in November 1953. Shackleton never won any honours with Sunderland, the closest he came to doing so being a third-place finish in
1949–50, when they finished one point behind champions
Portsmouth. Shackleton felt that a surprise home defeat to
Manchester City on 15 April was both decisive and galling, as teammate
Jack Stelling twice missed a penalty in a 2–1 loss. Sunderland lost fewer games than any other team in the
1954–55 season, but still ended up four points behind champions
Chelsea. They also reached the semi-finals of the FA Cup in 1955 and in 1956, losing 1–0 to Manchester City at
Villa Park and then 3–0 to
Birmingham City at
Hillsborough. This meant he played only 45 minutes for new manager
Alan Brown, who had a reputation as a tough taskmaster. The club were reluctant to grant him a benefit match, but relented after Shackleton threatened to tell
the FA about illegal payments the club had made. ==International career==