Found the following hamletworks.org entries referring to line 444

View Commentary Note for 444
444 Ham. If it assume my noble fathers person,1.2.243

View Immaterial Textual Note for 444
444 Ham. If it assume my noble fathers person,1.2.243

View Material Textual Note for 444
444 Ham. If it assume my noble fathers person,1.2.243

View Commentary Note for 456
456 My fathers spirit (in armes) all is not well,1.2.254