Roedd diwrnod prysur yn ôl yn sgwâr fawr Savannah.

It was a busy day back in the large square of Savannah.

Yr haul oedd yn tywynnu ar y tiroedd gwyrdd a'r coed derw â mwsogl yn hongian fel tlysau hir.

The sun was shining on the green lawns and the oak trees with moss hanging like long jewels.

Gwersyllai pobl rhwng yr adeiladau hanesyddol, rhyfeddod wrth ryfeddod.

People camped between the historic buildings, marvel upon marvel.

Roedd Gwyn yn eistedd ar fainc, llyfr mawr ar ei lin.

Gwyn sat on a bench, a large book on his lap.

Yn sydyn, wrth droi tudalennau'r llyfr, syrthiodd hen lythyr allan.

Suddenly, while turning the pages of the book, an old letter fell out.

Dyma lythyr o ddaliad papur tenau, llymaid o amser arall.

It was a letter from thin paper stock, a sip from another time.

Roedd testun mewn llawysgrifen hynafol, gan nodi lladrad ar amgueddfa leol na chafodd ei ddatrys.

The text was in ancient handwriting, noting an unresolved theft at a local museum.

"O, Dylan!

"Oh, Dylan!"

" galwodd Gwyn yn gyffrous, "Edrych ar hwn!

Gwyn called excitedly, "Look at this!"

" Roedd Dylan yn sefyll gerllaw, chwilfrydig fel arfer, yn edrych dros yr ysgwydd.

Dylan stood nearby, as curious as ever, looking over the shoulder.

"Mae’n synhwyrol, ond mae'n rhaid ei weld i'w gredu.

"It's intriguing, but you have to see it to believe it."

" Roedd ei lygaid yn disgleirio gan awydd gwneud stori ohono.

His eyes were shining with the desire to make a story out of it.

Effallai adrodd mewn blwch wrth ffrindiau pan fyddai yn ôl yn y coleg.

Perhaps recount it in a booth to friends when he was back at college.

Ar ben arall y meinc, edrychodd Rhys, yn fwy amheuon.

At the other end of the bench, Rhys looked, more skeptical.

"Nid yw hyn yn sicrwydd," meddai Rhys, yn crafu ei ben.

"This isn't a certainty," said Rhys, scratching his head.

"Mae angen tystiolaeth arnom, Gwyn.

"We need evidence, Gwyn."

"Ond gyda penderfyniad newydd, penderfynodd Gwyn ddilyn y cliwiau yn y llythyr.

But with newfound determination, Gwyn decided to follow the clues in the letter.

"Mae rhaid inni gael gwybodaeth yn erbyn aith, ac mae hyd yn oed llythyr yn lled angen ein help ni," meddai Gwyn.

"We must gather information against doubt, and even a letter partly requires our help," Gwyn said.

Trioleg anhepgor oedd wedi ffurfio yn yr heulwen dan gysgodion coed.

An indispensable trio had formed in the sunlight under the shade of trees.

Roedd popeth yn dechrau gyda lythyr ac arweiniodd i’w symudiad cyntaf.

Everything started with a letter and led to its first movement.

Dros y dyddiau nesaf, teithiodd Gwyn, Dylan, a Rhys i wahanol leoliadau hanesyddol o gwmpas Savannah.

Over the following days, Gwyn, Dylan, and Rhys traveled to various historical locations around Savannah.

Cymerodd peth amser, a llawer o gloddio yn archifau llai amlwg, ond roedd yr holl ymdrech yn rhoi llawenydd arbennig i Gwyn.

It took some time, and a lot of digging through less obvious archives, but all the effort brought special joy to Gwyn.

Dylan erbyn hynny treuliai oriau yn tynnu ffotograffau ac adrodd storïau doniol o'u hanturiaethau.

Dylan, by then, spent hours taking photographs and recounting funny stories of their adventures.

A Rhys, er ei bod yn ofalus, dal i fynychu ac yn cadw'r rhesymeg yn llawn.

And Rhys, though cautious, still attended and kept the reasoning fully intact.

Galwyd y tri ffrind at eu cam olaf, wrth gerdded trwy'r amgueddfa.

The three friends were called to their final step, as they walked through the museum.

Ar waelod hen wall, roedd swn cudd, a chafwyd yr arteffact hir-golli.

At the bottom of an old wall, there was a hidden sound, and they found the long-lost artifact.

O fewn y bocs guddiog, cuddodd eitem hynafol, sydd aros yn golofn coll hanes.

Within the concealed box lay an ancient item, which remained a lost column of history.

Daliodd Gwyn yr arteffact mewn dwylo ysgafn, teimlo twist o falchder.

Gwyn held the artifact in gentle hands, feeling a twist of pride.

Bulgad oedd ar wyneb Dylan, ac awgrymodd Rhys yn ddinod, "Gwaith da, Gwyn.

There was a grin on Dylan's face, and Rhys suggested quietly, "Well done, Gwyn."

"Yn ddiwyro, daeth y tri ohonynt yn ôl i'r sgwâr gyda rhuthr bodlon, law yn llaw.

Unwavering, the three of them returned to the square with a rush of satisfaction, hand in hand.

Llawenychasant nid yn unig wrth ddatrys dirgelwch, ond hefyd wrth solidau eu cyfeillgarwch a'r hyder newydd a ganfyddodd Gwyn.

They rejoiced not only in solving a mystery but also in solidifying their friendship and the newfound confidence Gwyn had discovered.

Taflodd yr haul am yr holl adeiladau hyn, a llithiwyd hir eang trwy'r dydd i'r nos, nes bydded llai o gerddwyr yn gadael y llwyfan.

The sun cast over all the historic buildings, and a long drift slipped through the day into night until fewer walkers left the scene.

Mae'r tro, yr atgof, yr antur - i gyd yn un heddiw.

The turn, the memory, the adventure—all united today.

Gwylio'r llewod, gwybod nad oeddent yn anhepgor, ond mewn gwirionedd yn glyffaer addysgiadol – stori'n gorffen gyda'r cyfeillgarwch fel ffenestri'n hawlio'r dydd heb sŵn.

Watching the lions, knowing they were not indispensable, but indeed an educational clue—the story finished with the friendship as windows claimed the day without noise.

Mae'n nod ychwanegol, ac ni fyddai'n anghofio mewn gobaith a gorfoledd.

It was an additional note, and it would not be forgotten in hope and delight.