I'm unable to find any simple way to search commercial listings in the past, but a property like this is usually a jumbled mess of other properties they combined over time. The best I could find is that Ron Dowdy had a hand in building up I drive and leased/bought properties near Disney over time. Ron and Mary are married and seem to split up ownership of the LLC's managing properties. I can't find much on her alone.
from Orlando Sentinel: (part of an old article)
https://www.orlandosentinel.com/news/os-xpm-2005-06-13-idrive13-017-story.html
GIFT-SHOP MAGNATE:
Ron Dowdy also saw the potential in selling stuff to tourists. But he really prospered as a landowner. A B-52 navigator and bombardier who flew 232 missions over Vietnam, Dowdy left the Air Force in 1971 at age 28 and headed to the city where he had been stationed three years earlier at McCoy Air Force Base. In 1973, he answered an ad for a hotel gift-shop manager at a Howard Johnson's near Walt Disney World. He wound up leasing the 14-by-20-foot space for $250 a month. \"I leased it, thinking I'd make $5,000 a year,\" he said. \"If I had 10, I'd make $50,000 a year.\" By 1976, Dowdy had 15 hotel gift shops under lease. He was also buying land south of Wet 'n Wild on I-Drive's east side, much of it owned by Finley Hamilton. By 1985, he owned 15 acres that included a doughnut shop; land leased to restaurants and a miniature-golf course; and retail stores. He opened a bowling alley and a now-closed ice-skating rink on adjacent Canada Avenue. He also owned a Rolls-Royce. \"I made my money selling Kotex, gum and cigarettes,\" he said, smiling. Dowdy, now 62, runs his empire from the third-floor office of Dowdy Plaza and jokingly calls himself the \"mayor of Dowdyville.\" His office walls are crammed with plaques recognizing him as a major Florida Citrus Sports Association member, University of Central Florida booster and $1 million donor to East Carolina University, which named its football stadium after him. In recent years, though, neighbors have complained about the condition of Dowdy's properties -- and the gift shops, $1.99 stores and tattoo-parlor tenants he has brought in. Dowdy, though, is unfazed. He acknowledges much of North I-Drive is \"tacky.\" But he says his contribution was wholly unplanned: \"I don't bring them in,\" Dowdy said. \"They just come and find me.\" Looking over the office balcony of Dowdy Plaza, he proudly points at a 16-by-7-foot mobile sandwich kitchen that moved into his parking lot for the summer. \"Four thousand a month [rent],\" he said. The tenant said he pays $2,500.