Complex sentence: Perhaps it is ironic that the smallest man in England at the time was born in Rutland, the smallest county in England where the county motto is "Multum in Parvo" -'Much in Little'.
Split into simpler sentences: Perhaps it is ironic that the smallest man in England at the time was born in Rutland, the smallest county in England. Adding to the ironic coincidence is the county motto of Rutland, "Multum in Parvo" -'Much in Little'.