FreeBMD gives a death record in Westbury on Severn District in the Sep quarter 1887 Vol-6a, Page-141, Age-60.

From FoDFHT Parish Register Entries and corresponding with the above:

Record_ID:
33896
Entry_Number:
779
Year:
1887
Month:
Jul
Day:
6
Surname:
BROWN
Forenames:
Joseph
Residence:
Newnham
Age_at_death:
60
Officiating_Minister:
T J Weight
Event:
Burial
Cause_of_death:

Memoranda:

Notes:

Register_Reference:
P 228 IN 1/19
Page_No:
98
Parish_Chapel:
Newnham
Soundex:
B650

I do not think this is your Joseph Brown.