Whilst I was born in Ipswich, I didn't live there until the 1960s. My mother came from Brettenham, Suffolk and none of my relations on her side of the family ever used the word 'rove', although they did know what it meant, I'm sure. However, nearly all the people I became friends with in my teenage years, who were born in the Nacton/Gainsborough area of Ipswich, did use that word - which seems to coincide neatly with what you say, Bob. I lived all over the UK as a child (my father was in the RAF) and I never heard it used anywhere else.