Grahams are present in Port of Menteith, Aberfoyle and Buchanan in the parish records 1700 and later. These were adjacent parishes.
They also appear in the Hearth Tax of 1691-1695.
Aberfoyle:
Earle of Monteath
John mckerocher and Callom mcfarland -- 2 -- £1.8.0
Duncan mckerocher and andrew Graham -- 2 -- £1.8.0
John mcarthur and John mckerocher ut [with] a waist -- 3 -- £2.2.0
Poor utin [within] the paroch of Aberfoyl
Fergus Blair John mckennan
Anna mckerocher Donald mceuin
walter graham walter Buchanan
walter and John mclachlanes
James Leny margaret mcfarlane
margaret mceuin Katherin mcneil
Andrew mcLean Jannet Blair
Callom mcgregor & duncan mcnuir
Donald mckerocher duncan mcLachland
and John darleith. in all -- 19
Port of Meneith:
Achyle & west drunkie
Alexander stirling heretor in his house -- 3 -- £2.2.0
Georg graham and Andrew mclean -- 2 -- £1.8.0
Duncan mckerocher and finlay mcnekard -- 2 -- £1.8.0
John and Ferqhard mckerochers -- 3 -- £2.2.0
Malcome mckerocher and thomas mcfarlane -- 2 -- £1.8.0
Alexander mcfarland -- 1 -- £0.14.0
Drunkie
Walter Graham heretor, Andrew mcfarland -- 2 -- £1.8.0
John Buchanan and Donald mckerocher -- 2 -- £1.8.0
Glennie and Munduy
Robert Graham heretor in his house --3 -- £2.2.0
John and donald mckerochers -- 3 -- £2.2.0
Donald Fergusone and Johnmckerocher -- 2 -- £1.8.0
Patrick wood -- 2 -- £1.8.0
Baleling
Agnes mckerocher and John steuart -- 3 -- £2.2.0
Lord Cardross interest
patrick mckerich and George Keir -- 2 -- £1.8.0
Earle of monteaths interest
William mc kerocher and James turner [s?osts] -- 3 -- £2.2.0
Donald mckercher and jennet Drumond -- 2 -- £1.8.0
It is unclear how or if they relate to the Earl of Menteith - William Graham of that time.