Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_51509 ( "Squad No." real, "Name" text, "Position" text, "League Apps" text, "League Goals" real, "FA Cup Apps" text, "FA Cup Goals" real, "League Cup Apps" text, "League Cup Goals" real, "FLT Apps" text, "FLT Goals" real, "Total Apps" text, "Total Goals" real )

### Question ###
I want to know the sum of fa cup goals for david mirfin and total goals less than 1

### Accurate SQL ###

SELECT SUM("FA Cup Goals") FROM table_51509 WHERE "Name" = 'david mirfin' AND "Total Goals" < '1'