ThethirdpartoftheDeesideLine(the“Aboyneand Braemar”Railway)wasfromAboyneonlytoBallater andopenedon17/10/1866(goods/passengers).As thiswasaftertheLeasecameintoeffect,GNSRran the Ballater trains from the start.ThefactthatPrinceAlbertofSaxe-Coburgand Gothaandhiswifehad,in1852,boughtwhatlater becameBalmoralCastlemay-ormaynot-have anythingtodowiththefactthattheDeesideLine neverextendedbeyondBridgeofGairn(amilewest of Ballater).
TheDeesideRailway-attemptingtogetbetterterms fromScottishNorthEasternRailway(SNER)forthe latter’sproposedScottishNorthernJunctionRailway, fromStonehaventoKintore(whichwouldcrossthe DeesideatCulter)offeredtoleaseitselftoGNSR.ThisideawasseizeduponbyGNSR,asawayof obstructingtheSNER.TheLeasewasfor999years from 1/9/1866.