United States Census for 1830 has two listings for Jesse Robinette in Allegany County, Maryland both have the oldest male aged between 30 and 40:
Page 49: had 23 slaves:
"United States Census, 1830," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHPG-PLN : 12 August 2017), Jses Robinett, Allegany, Maryland, United States; citing 54, NARA microfilm publication M19, (Washington D.C.: National Archives and Records Administration, n.d.), roll 53; FHL microfilm 13,176. Image 49-1 and Image 49-2.
Page 54 had no slaves:
"United States Census, 1830," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHPG-PLN : 12 August 2017), Jses Robinett, Allegany, Maryland, United States; citing 54, NARA microfilm publication M19, (Washington D.C.: National Archives and Records Administration, n.d.), roll 53; FHL microfilm 13,176. Image 54-1 and Image 54-2.