Parkinson and Frodsham
of London and Liverpool
1848 Partnership change. '...the Partnerships formerly subsisting between William Parkinson, deceased, and the undersigned William James Frodsham, and subsequently between the said William James Frodsham and John Frodsham, deceased, carrying, on business at Change-alley, in the city of London, as Chronometer and Watch Makers, under the respective firms of Parkinson and Frodsham, and Parkinson and Frodshams, have been dissolved; and that the business will in future be carried on at the same place by George Frodsham and William Frodsham, under the firm of Parkinson and Frodsham.— Dated the 10th day of July 1847. W. J. Frodsham, in his own right, and as the executor of the said William Parkinson. Charlotte Frodsham, administratrix of the said John Frodsham. Geo. Frodsham. William Frodsham.'
1856 Partnership dissolved. '...the Partnership heretofore subsisting between us the undersigned, George Frodsham and William Frodsham, carrying on business at Change-alley, Cornhill, in the city of London, as Chronometer and Watch Makers, under the firm of Parkinson and Frodsham, hath been this day dissolved by mutual consent...' 
Name change to Frodsham and Keen
1947 Ceased trading