Found the following hamletworks.org entries referring to line 279

View Immaterial Textual Note for 271
271 But you must knowe your father lost a father,1.2.89

View Commentary Note for 279
279 An vnderstanding simple and vnschoold1.2.97

View Immaterial Textual Note for 279
279 An vnderstanding simple and vnschoold1.2.97

View Material Textual Note for 279
279 An vnderstanding simple and vnschoold1.2.97