"Гамлет" мог быть написан даже раньше 1601

http://www.shakespeare-literature.com/l_biography.html:

A play of Hamlet was performed, probably by the Chamberlain’s men, for Henslowe at Newington Butts on the oth of June 1594. There are other references to it as a revenge-play, and it seems to have been in existence in some shape as early as I 589. It was doubtless on the basis of this that Shakespeare constructed his tragedy. Some features of the so-called Ur-Hamlet may perhaps be traceable in. the German play of Der bestrafte Brudermord. There is an allusion. in Hamlet to the rivalry between the ordinary stages and the private plays given by boy actors, which points to a date during the vogue of the children of the Chapel, whose performance began late in 1600, and another to an inhibition of plays on account of a “late innovation,” by which the Essex rising of February 1601 may be meant. The play was entered in the Stationers’ Register on July 26, 1602. The First Quarto was printed in 1603 and the Second Quarto in 1604. These editions contain texts whose differences from each other and from that of the First Folio are so considerable as to suggest, even. when allowance has been made for the fact that the First Quarto is probably a piratical venture, that t’he play underwent an exceptional amount of rewriting at Shakespeare’s hands. The title-page of the First Quarto indicates that the earliest version was acted in the universities of Oxford and Cambridge and elsewhere, as well as in London. The ultimate source of the plot is to be found in Scandinavian legends preserved in the Historia Danica of Saxo Grammaticus, and transmitted to Shakespeare or his predecessor through the Histoires tragiques (1570) of Francois de Belleforest

Тем более.
Я взял крайнюю дату, еще допускающую в принципе использование сюжета.

Но всё равно очень забавно )

Насчет Гамлета. Какая-то смутная связь, думаю, была. Тихо Браге - потомственный датский дворянин, среди его кузенов имеются граф Розенкранц и граф Гильденстерн. Можно увидеть их имена на портрете, изображающем Браге на фоне генеалогического древа. Так что - любопытно!

А сколько дворянских родов было в Дании XVI века? Не думаю, что так уж много, все они там связаны были...
Но любопытно, да, потому и дал ссылочку.

Все-таки, кузены, а не дальние родственники.