<span>Mary Shakespeare </span>was the mother of William Shakespeare. She was the daughter of Robert Arden. The Arden family had been prominent in Warwickshire since before the Norman Conquest .
The inflection of the verb occurred is a past-tense.
"Megan Parker keeps running to check her mailbox, she is waiting for a letter from my cousin."
Correct version
"Megan Parker keeps running to check her mailbox. She is waiting for a letter from her cousin."