"My uncle lives behind the hill, my brother owns the shack over there," Forbes told ABC News, pointing to the horizon. "I was born a few miles over there. The house is long gone now."
Forbes' 85-year-old mother, Molly, lives in a little house across from Forbes, which she's named "Paradise."
"My mother loves her house, and they want me to shift her to suit him?" Forbes asked.
But Trump also can trace his lineage back to Scotland. His mother is from Lewis, off the Scottish coast, which is why, he told reporters, Scotland was a special place for him.
"She passed away a number of years ago, at 88 years old," he said. "So I've always had a tremendous feeling for Scotland."
But residents near his proposed development noted Trump's family did not live nearby.
"He's not from here, his grandmother is from miles away," said Margaret Davidson. "She's from Skye, that area, about 500 miles north of here."
Margaret Davidson moved to Menie three weeks ago from a family farm half a mile away. They knew of the Trump development, but had to move when Margaret required the use of a wheelchair.
"It took us two years and a half to get permission to build one house here, but Trump is going to get a special dispensation," said Margaret's husband, Norman.
Menie, he said, is in a "green belt," a zone protected for its wildlife, where building permissions are hard to come by.
"If he does the golf it will be nice, it will be well done," Margaret said. "But if Trump gets everything he wants, it will create precedents."
Although the Davidsons do not mind their new neighbor, they do not trust him either.
"They'll promise you anything," Norman said, "even accommodation for 400 workers so it would give jobs for local people."
Under the Trump proposal, the apartment complex would accommodate the resort's employees, but locals remain suspicious.
"This is not an area where we are desperate for jobs," Councilor Debra Storr told ABC News.
Storr, who sits on both the planning committee and the policy committee that will vote on Trump's proposal later this month, is well aware of her constituents' reticence.
Locals, she says, are mostly concerned about the building of what golfers call "the back nine" — the bottom half of the golf course. Trump wants to build it on a Scottish National Heritage site, a natural sand dome of exquisite beauty.
Under the proposed plan, the dunes, which move a few meters up the coast every year, would be stabilized by marine and fescue grass.
The location of the last holes is a crucial part of Trump's vision of Menie Links. He and his team want to take advantage of the natural elevation of the dome and of the striking ocean view to make it the best asset of the complex.
"The back nine needs that specific layout to finish your round of golf," Hogday said. "This will make it tougher and more enjoyable."
But for that vision to come true, Trump needs to obtain permission to immobilize the sand dome. Earlier this year, Trump International submitted a $400,000 dossier to the Scottish Heritage Society, in which marine biologists, archaeologists, ornithologists, zoologists and other environmental experts praised the project's eco-friendliness and sustainability. According to Hogday, so critical is the Scottish Heritage Society's permission that the rest of the development hangs in the air.