Thettawshay of Sikyay

Thettawshay of Sikyay was a grandson of King Kyawswa I of Pinya. He is recognized as a patrilineal ancestor of the early Toungoo dynasty kings, including, Mingyi Nyo, Tabinshwehti and Nanda.

Brief

All three main chronicles—the Maha Yazawin, Yazawin Thit, and Hmannan Yazawin—identify one Thettawshay as a patrilineal ancestor of King Mingyi Nyo, the founder of the Toungoo Dynasty. The chronicles, however, do not agree on specific genealogical details.

Regarding his ancestry, the Maha Yazawin says Thettawshay was a son of Governor Shwe Nan Shin of Myinsaing. The Yazawin Thit states he was a son-in-law of Shwe Nan Shin, and his father was Min Letwe of Sikyay, a son of King Kyawswa I of Pinya and Queen Mway Medaw of Pinya. The Hmannan agrees with the Yazawin Thit's account.
Regarding his descendants, the Maha Yazawin says Mingyi Nyo was his three times great grandson, through his son Thray Waduna of Pinya. The Yazawin Thit states Mingyi Nyo was his two times great grandson, through his son titled Maha Thinkhaya I. The Hmannan generally accepts the Yazawin Thit's lineage but disagrees with the Yazawin Thit on the identity of the mother of Maha Thinkhaya I. The Hmannan names her as Saw Min Hla, daughter of Min Letya, not the daughter of Shwe Nan Shin, as stated in the Yazawin Thit.

Historian Sein Lwin Lay's 1968 analysis on the ancestry of King Mingyi Nyo essentially follows the Maha Yazawin's account. One key difference is that he changed Thettawshay's father to King Kyawswa I of Pinya. He did not provide an explanation as to how he arrived at this specific list, however.
The following table lists the chronicle accounts and Sein Lwin Lay's account regarding Mingyi Nyo's ancestry.

Generation	Maha Yazawin	Yazawin Thit	Hmannan Yazawin
Grandparents	not mentioned			not mentioned
Parents	Shwe Nan Shin of Myinsaing	Min Letwe of Sikyay	Min Letwe of Sikyay	Kyawswa I of Pinya
Self + wife	Thettawshay			Thettawshay
Son + wife	Thray Waduna of Pinya			Thray Waduna of Pinya
Grandson	Thray Sithu	Maha Thinkhaya II	Maha Thinkhaya II	Thray Sithu
Great grandson	Thray Thinkhaya	Maha Thinkhaya III	Maha Thinkhaya III	Thray Thinkhaya
2x great grandson	Maha Thinkhaya	Mingyi Nyo	Mingyi Nyo	Maha Thinkhaya
3x great grandson	Mingyi Nyo	not mentioned	not mentioned	Mingyi Nyo