Sampras won the Wimbledon men's singles title 7 times; Federer has won it 6 times.
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billie jean king
No player has ever won Wimbledon 8 times in a row.
Nadal has won Wimbledon twice.
Boris Becker reached the Wimbledon finals 7 times, winning 3.
jimmy connors
William Renshaw won 7 Wimbledon singles titles and 5 Wimbledon doubles titles.
If you're speaking of singles titles, Martina Navratilova won 9 times at Wimbledon.
Roger Federer
Steffi Graf won the ladies' Wimbledon singles title 7 times.
As of the 2010 Wimbledon, Rafael Nadal has played in 9 Wimbledon Men's Singles tournaments. His first time came back in 2002.
If by "sempres" you mean Pete Sampras, then the answer is 7 times.