On July 28, 1540, Catherine Howard married King Henry VIII, guaranteeing herself a sticky end. 
This seems to be the week of beheadings. Not sure if it’s the summer heat, or just a fluke of history. 

Catherine Howard (1523-1542), 5th Wife
From the 450th Death Anniversary of King Henry VIII series
Issued by Royal Mail UK in 1997
Designer: Kate Stephens

17 year old Catherine was married to 49 year old Henry July 28, 1540, days after Henry’s marriage to Anne of Cleves was annulled. By November 1541, Henry arrested on charges of high treason and executed on February 13 1542, aged 19,