Ranald Udny, of that Ilk

About the use of names in Scotland : of that Ilk is used to avoid repetition, especially where the person owned a property with the same name as his own; thus, Udny of that Ilk instead of Udny of Udny.
Merriam-Webster: chiefly Scotland : same - used with that especially in the names of landed families
Wiktionary: Having a name that is the same as the place where one lives.
“Ilk.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ilk. Accessed 26 Mar. 2020.
https://en.wiktionary.org/wiki/of_that_ilk

from http://archive.org/stream/thanageoffermart00byutemp#page/427/mode/1up

VI. Ranald Uldeny of Uldeny.

He is mentioned as son and heir of William Oudny in an inquest on Agnes Leslie in 1509.= He was also one of the jury on inquests in 1503, 1505, 1506, &c. In 1510 he was served heir to his father, William, in the lands of Oudny, Mmnes, Tulyaiff, etc. In 1511 there is a charter of Reginald Oudny of that ilk, and his spouse, Isabella Panton and the longest liver of the whole and entire lands of Oudny, Auchloun, etc. In 1511 he signs a bond of man-rent to the Earl of Errol, and in the same year he gives a charter to David Gardin and Janet Tulloch, his spouse, and the longest liver of them, of a half of his lands of Tilliecorthie, in the territory of Auchloune. He had issue:-

I. William, his successor.

II. Andrew of Tillery, who married Janet Lyall, and had issue a son, William, a daughter, Jane, married to Michael, third son of George Leslie of New Leslie.

In 1518, Raynald Owdny of that ilk gave a charter to vicars and chaplains of the choir of the cathedral church of Aberdeen. He died some time before the year 1549, and was succeeded by his son,

VII. William Uldeny of Uldeny.

There are many references to Ranald and his mother and father in this book: http://archive.org/stream/recordsofsheriff01aberuoft/recordsofsheri... "Records of the Sheriff Court of Aberdeenshire. Edited by David Littlejohn"