Alexander Hamilton, Lord of Grange - From ancestry.com Michael Dwayne Hamilton Family Tree

Lord Alexander Hamilton, of Grange, is not the son of Sir George Hamilton of Donalong, Baronet, and his wife Mary Butler. Certainly, there is no mention of him in Stirnet's report of the published accounts of his family:

https://www.stirnet.com/genie/data/british/hh4aa/hamilton10.php

Does anyone object to him being disconnected from this family.

Question 1. Can anyone provide evidence which proves that Alexander Hamilton, Lord of Grange, is the son of Sir George Hamilton of Donalong, Baronet.

Question 2. Alexander Hamilton is identified as "Lord of Grange". Can anyone provide evidence for the location of "Grange".