Foreshadow/ "Wuthering Heights"

"This writing, however, was nothing but a name repeated in all kinds of characters, large and small..."  This quote describes when Lockwood saw Catherine's name written many times.  However, her last names varied from Earnshaw, Linton, and Heathcliff.  I think this was to foreshadow the part of the story when Catherine loved two different men, Heathcliff and Edgar Linton.  I think Earnshaw is used to describe her name before she was married.  Catherine wanted to marry Heathcliff because she was madly in love with him; however, she married Edgar because he was what her father, Hindly, would approve of.  She knew that her father thought very lowly of Heathcliff.  This really upset and angered Heathcliff.  However, when Catherine was about to die, she wanted to see Heathcliff more than she wanted to see Edgar.  This proved that she had the greater love for Heathcliff.