The primary difference between a marquis and a duke lies in their rank within the nobility hierarchy. A duke is typically higher in rank than a marquis, with dukes holding more prestige and authority. The titles also differ in their historical roles and the regions in which they were prominent, with dukes often governing larger territories than marquises. In general terms, dukes are considered to be among the highest aristocracy, while marquises rank just below them.
An earl is a lower rank than a duke. A Duke is the highest rank of nobility right after the Prince. An Earl, on the other hand, is a lower rank above viscount and below a marquis.
A duke.
Marquis is below a Duke and above an Earl.
Duke... i think
Since he was a duke, he outranked the marquis in nobility.
A marquis.
Duke
Marquis of Santa Cruz
The Duke of Edinburgh is the Queen's husband. The Prince of Wales is her son. Also, Edinburgh is in Scotland and Wales is... well, in Wales.
A duke holds control over a piece of land, kind of like a sector. An Arch- Duke holds control over a larger piece of land, basically a domain, which is usually made up of sectors.
The word "marquis" is defined as a nobleman rank above a count but below a duke. This term and position is only relevant and exists in few European countries.
civilian, knight, baronet, baron, viscount, earl, marquis, duke, furstin and prinzessian.