Found the following hamletworks.org entries referring to line 278

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

View Commentary Note for 278
278 A hart vnfortified, {or} <a> minde impatient1.2.96

View Immaterial Textual Note for 278
278 A hart vnfortified, {or} <a> minde impatient1.2.96

View Material Textual Note for 278
278 A hart vnfortified, {or} <a> minde impatient1.2.96