The surname is spelled variously White, Whyte and Whytt.
References
↑ 1.01.11.2 White Monument, Sorbie Old Churchyard.
The White Monument (identified as No. 22 on the Chapple/Birchman map of the cemetery) was erected by William White in memory of various members of his family, including "his grandfather Andrew White, farmer and miller in *Creech* who died about the year 1743".
↑ 2.02.1 Parish Lists of Wigtownshire and Minnigaff, 1684 (1916) Page 56.
The Parish List for 1684 includes Andrew Whytt of the "Milne of Whythills" among the examinable persons in Sorbie Parish.