Mangrai, sarki na 25 na Ngoenyang (Chiang Saen na zamani) na daular Lavachakkaraj, wanda mahaifiyarsa yar sarauta ce a Sipsonppanna ("al'ummai goma sha biyu"), ya daidaita mueangs na Ngoenyang zuwa cikin hadaddiyar masarauta ko mandala kuma suna da alaƙa da Makwabciyar Masarautar Phayao.A cikin 1262, Mangrai ya ƙaura babban birnin kasar daga Ngoenyang zuwa sabuwar Chiang Rai da aka kafa - ya sanya sunan birnin.Daga nan sai Mangrai ya fadada zuwa kudu kuma ya mamaye daular Mon na Hariphunchai (wanda ke tsakiyar Lamphun na zamani) a cikin 1281. Mangrai ya koma babban birnin sau da yawa.Ya bar Lamphun saboda tsananin ambaliya, ya yi nisa har ya zauna a kuma gina Wiang Kum Kam a shekara ta 1286/7, ya zauna a can har zuwa 1292 a lokacin ya koma inda zai zama Chiang Mai.Ya kafa Chiang Mai a cikin 1296, ya fadada ta ya zama babban birnin Lan Na.Ci gaban al'adun mutanen Arewacin Thai ya faro tun kafin lokacin da masarautu masu zuwa suka gabaci Lan Na.A matsayin ci gaban daular Ngoenyang, Lan Na ya fito da karfi sosai a karni na 15 don ya fafatawa da Masarautar Ayutthaya, wadda aka gwabza yaki da ita.Duk da haka, Masarautar Lan Na ta yi rauni kuma ta zama jihar daular Taungoo a shekara ta 1558. Sarakunan vassal da suka biyo baya sun yi sarautar Lan Na, kodayake wasu sun sami yancin kai.A hankali mulkin Burma ya janye amma sai ya ci gaba yayin da sabuwar Daular Konbaung ta fadada tasirinta.A cikin 1775, shugabannin Lan Na sun bar ikon Burmese don shiga Siam, wanda ya kai ga Yaƙin Burmese-Siamese (1775-76).Bayan ja da baya na sojojin Burma, ikon Burma a kan Lan Na ya zo ƙarshe.Siam, karkashin Sarki Taksin na Masarautar Thonburi, ta sami iko da Lan Na a shekara ta 1776. Daga nan ne Lan Na ta zama jihar Siam a karkashin daular Chakri da ta gaje shi.A cikin rabin karshen shekarun 1800, jihar Siamese ta wargaza 'yancin kai na Lan Na, tare da shigar da ita cikin sabuwar kasar Siamese.^[29] Tun daga 1874, jihar Siamese ta sake tsara masarautar Lan Na a matsayin Monthon Phayap, wanda aka kawo ƙarƙashin ikon Siam kai tsaye.^{[] [30]} Masarautar Lan Na ta zama ta tsakiya ta hanyar tsarin mulkin Siamese thesaphiban da aka kafa a 1899. Birtaniya da Faransanci.^[32]