Edward is one of the great English names: Old English Eadweard, wealth-guardian, carried by eight English kings and one brooding vampire who reshaped a generation's relationship with the name. On a pet, Edward carries all of this history and then the animal immediately does something undignified, which is the correct outcome.
The Twilight Factor
Edward Cullen from Stephenie Meyer's Twilight series (2005-2008) is the inescapable contemporary reference. That association has mellowed: Twilight is now a nostalgic rather than polarizing cultural object, which means Edward can be chosen straightforwardly again. Maine Coon cats are perfect for Edward's combination of grandeur and underlying chaos.
The Royal Register
For owners wanting the royal lineage over the vampire one, Edward VII and Edward Elgar provide distinguished company. Cavalier King Charles Spaniels suit the royal interpretation specifically. The human name Edward is a steady traditional choice with deep English roots.
Counter-Reading: The Long-Name Tax
Edward collapses immediately to Ed or Eddie in daily use. If you want Ed, start with Ed. Edward on a pet is the ceremonial form for introductions and vet paperwork, which is a perfectly acceptable role for three syllables. Browse other royal-register pet names.