12th paragraph 6th sentence "His wife, Ruth Ball, eldest daughter of Sir Charles Gould Morgan, and widow of Captain Ball, naval officer, later married Samuel Humfrey of Pennydarren Place Glamorgan." This is a confusion of persons.
CRABB ROBINSON DIARY 25.5.1820 Mrs Lanseer, mother of the artist - radical views
12.6.1827 "the late Mrs Lanseer was a firm believer and Unitarian Christian"
I could find no trace of the death of Mrs Ann Landseer but she seems to have been the person Crabb Robinson was referring to (see below for details). In noting her Christian beliefs Robinson was defending her against those who confounded her radical views with disbelief. He could not have meant John Landseer's wife Jane nee Potts who lived till 1840
AMENDMENTS TO OXFORD DNB: Thomas Macklin (1752/3-1800) suggest omit "may have been the son of 'the Reverend Garrard Macklin of the Kingdom of Ireland' mentioned in the will of Thomas Wilson, prebendary of Westminster, from whom Thomas Macklin inherited considerable property in 1784." Thomas Macklin who inherited half of Thomas Wilson's estates in the Wirral was a different person who changed his name (as requested by the will) to Thomas Wilson, his will was PCC 1798 Thomas Wilson of Derby. His brother was Gerard (or Jared) Macklin born Chester 1728 see Trinity College Dublin admissions.
see Poland Street 19 to 44 in London Addresses dataset
World 23.4.1792 tickets for Mr Dusseck's night from him at 30 Poland St / Jan Dussek DNB 1760-1812 pianist & composer. He had been in England since 1789 and married in August 1792 so probably moved from Poland St then. His landlady in Poland St was presumably Mary Wood (see my entry Wood, John & Mary)
Amendments to Oxford DNB (Sophia Justina Dussek 1775-1847)
SOCIETY FOR CONSTITUTIONAL INFORMATION: John Frost original member 1780 Upper Charlotte St, Rathbone Pl. Marked as "declined" in 178? list but active later without being proposed again
BONNEY DIARY: 31.7.1794 saw Frost (once Bonney moved to Newgate on 24.10.1794 Frost was mentioned more often) Frost 27.10.1794 / 29.10.1794 / 1.11.1794 / 3.11.1794 / 11.11.1794 / 13.11.1794 / 14.11.1794 / 15.11.1794. Bonney had been the clerk of John Frost
HENRY ROBERT MORLAND (1716x19-1797)
CURRENT TEXT "(1716x19-1797), painter and engraver, the son of the genre painter George Henry Morland (d.1789) of St James's Square, London, was born on 6 October 1716 or in 1718 or 1719. Although his existence was doubted by Martin Davies (p.101), an entry for George Henry Morland is included in Ellis Waterhouse's British Eighteenth Century Painters in Oils and Crayons (p.247). Joseph Farington recorded on 15 June 1795 that Morland was seventy-six years old (Farington, Diary, 2.353)."