From 1891:
Esther Hay 64 b. Carluke
Mary Stevenson 24 b. Kirkfieldbank, Lanarkshire
Esther Stevenson 4 grandchild b. Kirkfieldbank, Lanarkshire
William Hay 36 coal miner b. Kirkfieldbank, Lanarkshire
Robert Hay 10 grandchild b. Glasgow
William Hay 6 grandchild b. Glasgow
Address: Dublin, Lesmahagow
And 1881:
Easter Hay 54 b. Carluke
William Hay 26 coal miner b. Carluke
Mary Hay 14 cotton winder b. Lesmahagow, Lanarkshire
Address: Kirkfieldbank, Lanarkshire
Lots of spelling variations to name Esther as we are seeing above
www.whatsinaname.net/php/search.php?action=search2&search_name=estherMonica