 Eastern Division in 1957.On 14 October 1956, Navan O'Mahonys 'B' claimed their 1st Intermediate championship title (for the club as a whole) when they defeated Dunshaughlin 3-6 to 0-5 in the final replay at Trim.They couldn't be promoted to senior level however due to the rule that a club cannot enter two teams in the one grade.