from http://homepages.paradise.net.nz/~dchamber/maclagan.htm
The Baronage of Angus and Mearns 1855 p224
Daniel Sinclair MacLagan, Esq., of Glenquiech, Angus, succeeded in right of his wife, and assumed the name and arms of MacLagan. She succeeded her brother Archibald Anderson, who died about 1834. Mr Anderson succeeded his maternal uncle John MacLagan, Esq., M.D., on his demise, 21st March, 1831, a bridegroom of fifty years standing, having survived his bride for that length of time. He and his successors were and are all natives of Strathtay, Breadalbane. Dr MacLagan made his fortune as a Doctor in the Army; and on retiring, he purchased the estates from Mr Grant of Glenquiech and Memus.
Before entering the Army he gave evidence of his skill, having cured the late Earl of Breadalbane of a dangerous malady - and the Earl out of gratitude, gave him one hundred guineas, and became his staunch friend and patron ever after. This gold was his first "golden nest-egg" - the foundation of his ample fortune.