Hagger is an ancient Pictish-Scottish name. It is derived from the Gaelic form Mac-an-t-sagairt, which means son of the priest. Patronymic names often substituted the name of a saint or other revered religious figure in place of a devout bearer's actual father. However, the patronym Hagger often denotes actual paternity in this case, since the marriage of clerics in minor orders was permissible, although the marriage of priests was declared illegal and invalid during the 12th century. The Hagger name was first found in Perthshire, where they were seated from very ancient times, some say well before the Norman Conquest and the arrival of Duke William at Hastings in 1066 A.D. The Coat of Arms is a blue shield with a silver star. The family motto, "Modeste conabor," means "I will attempt moderately."
John married Alice Walker. (Alice Walker was born about 1588.)