Hi,
Here are the Robert Harrisons I have found:
BURIAL: 1777 Jul 21 Harrison, Robert (sailor) 30 years, Whitby
BURIAL: 1777 Nov 10 Harrison, Robert son the late Robert & Mary (shopkeeper) 5 years, Whitby
BURIAL: 1778 May 7 Harrison, Robert (sailor) 85 years, Whitby
BURIAL: 1781 Sep 14 Harrison, Robert (sailor) 72 years, Whitby
BURIAL: 1786 Feb 10 Harrison, Robert son William & Rachel (master-mariner) 2 months, Whitby
BURIAL: 1789 Feb 20 Harrison, Robert (joiner) 22 years, Whitby
BAPTISM: 1785 Dec 1 Harrison, Robert son William & Rachel (master1) born & bapt, Whitby, b
BAPTISM: 1764 Apr 1 Robert son John Harrison, sawyer (born 6 Mar last) of Whitby
BAPTISM: 1768 Nov 3 Robt son Robt & Esther Harrison, sailor, born 27 Sep, of Dunsley
Hope some or all may help
Neil.