R. Halliday, D. Litt (1932). "The Mon Inscription of Siam: The Mon People," Journal Of The Burma Research Society, 22(3)(1932): 109. cited in BEFEO, t.XXV. 1925 p. 19 f. para. 2 "In the VIIth century of our era a princess the daughter of the king of Lavo (Lophburi) ... [sic] ..., went north with a following and found Haripuñjaya on the site of the modern Lamphun. Coedes gives the date as 661 A.D."
