To solve this one, you need to pinpoint the achievement that the folks described below have completed. There are only a few people who have completed this feat, though more should follow over time. This puzzle highlights four of the very select group. It may help if I told you how large that group is, but I think you've got enough in the info below to get you over the line. OK, as a rare act of kindness, the four individuals are presented in chronological order of achievement.
Person A has a highly influential musical output, and is particularly noted for the partnerships he formed. As well as being the first person on the planet to complete the connection you are seeking, he also won the Pulitzer Prize. His ashes were scattered at sea.
Person B is, to date, the only English born individual to achieve the connection. Showered with honours, he is regarded by many as the greatest Shakespearean actor of the 20th Century.
Person C was a multilingual style icon born in Belgium. She helped with the Dutch resistance and was noted for her contribution to humanitarian causes.
Person D's big break came in the mid 1980s and she has a wealth of success in the Arts, including authoring children's books, hosting her own chat show in the USA (doubtless accompanied with plenty of whooping), and numerous stage and film credits.
E, F, G and H= the number of years it took for A,B,C and D to each complete the connecting achievement.
J=the total value of the name of the achievement itself using A=1, B=2, etc. i.e the word 'cache' would total 20
K=the total number of vowels in the 4 connecting people's commonly known names combined (each name has two words)
The cache can be found at : N55 00.Y W001 38.Z