Sir Ludovick Houston of that Ilk

From https://en.m.wikipedia.org/wiki/Sir_Patrick_Houston,_1st_Baronet

Sir Patrick Houstoun of that Ilk, 1st Baronet, (d.1696) was created a Baronet of Nova Scotia on 29 February 1668, the elder son of Sir Ludovick (or Louis) Houstoun of that Ilk (d.1662) by his spouse Margaret, daughter of Patrick Maxwell of Newark.

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Gordon A. MacGregor writes: "James Schaw of Greenock, m. Margaret, daughter of Hugh Montgomery of Haselhead, and was father of John Schaw of Greenock, had a charter under the Great Seal for the lands of Wester Greenock-Schaw on 15 February, 1623, and m. Helen, daughter of Sir Ludovick Houston of that Ilk, (c/m 29 September, 1619 and Robert Schaw, acted as attorney for infefting his brother John Schaw in the lands of Greenock on 23 December, 1622."