The reason I'm posting this information for you is because I think it is the same family as the one you have listed.The places you have listed are all very close and my own ancestors have Laidlaws in their lineage.Everything is very close and although one place may be listed in a census, they may be listed otherwise elsewhere also.I found this information in a book written in 1910 taken from a sequel ofarticles about the past local inhabitants of the area around Hawick in 1889.It's called Border Biography by J.C.Goodfellow reprinted in 1930.
"James Hogg was born in 1770, his mother, Margaret Laidlaw, has been described as "a woman of superior energy and cultivated mind".
In his sixteenth year he got an engagement as a shepard to Mr. Laidlaw of Willanslee (now Williamsless) in Peeblesshire, with whom he remained for almost four years. At the term of Withsunday, 1790, he became shepherd to Mr James Laidlaw , farmer of Blackhouse, on the Doughlas Burn, in Yarrow. Mr Laidlaw was a man of more than ordinary intelligence. He and his family were fond of reading, and had a library well-stocked with the common literature of the times. He gave Hogg the use of his library, and this may be said to have laid the foundation for his career as a poet and writer.
While Hogg was in the service of Mr Laidlaw, he and William Laidlaw his master's son, became fast friends. Their taste's and sympathies lay in the same direction, and although William Laidlaw was ten years younger than Hogg, his clear mind perceived the ability of his friend, and judiciously encouraged him on in his poetical efforts. Hogg left in 1800 after having been with Laidlaw ten years."