"Yes. That mark doesn't appear wildly. If you are not coming from my world, one of your ancestor must have been, because this mark means a lot to our world. I don't knwo all the darks of the story linked to this mark, but I can explain what I know about.
I've talked about you of the dragonmarked house. Dragonmarks are marks linked to the Dragon of my worlds. I am not that familiar with the origin. There is twelves true dragonmark. These marks hold similars powers for all people who has it. A single true dragonmark appears only on one race. There is also another kind of mark, aberrant. These can appears on any race that can hold a dragonmark, but they can hold any type of power and they are generalyl related to evil.
The true dragonmarks are holded by the thirteen houses. Each have his own unique true dragonmark, except the elves, which have two houses that hold the same mark. I think the 13th house have spilt from the other. Each have there own trade and there mark help them to be specialist in it.
That's why my family aren't as good in trapmaking then house Kundarak. House Kundarak is teh only dwarven house, and they hold the only true dragonmark that appear on dwarves, the mark of warding. So you can guess why, with such mark, they became great merchant and banker, there mark allow them to protect there goods liek no one else, no counting on the natural craftmenship of dwarves for massonery and balcksmithings." explains Kharas.
He then points at the mark. "This is the mark of making. The mark of making is one of the true dragonmark hold by an house of humans. House Cannith. House Cannith is the greatest house of artificer on my world... well, that's my opinion, but with reason. First, there mark help them in there craft, and they have proven it. They have made the warforged. The warforged and half-living creature and half-construct... They have created it during the Last War, a war that was waged during a century, that a whole kingdom have been blasted down, literally, in one day. During that war, the House Cannith have created huge forge that was allowing them to make the Warforged. These forge have been disabled at the end of teh war, but many warforged are still living and are now free to live life anyone else, but the creation of new warforged is now forbidden.
That bring me questions. You seems to be human, but your population seems to be partly construct. They have similarity with the warforged, but if they are, they would be a much more refine work then the warforged of my world. I might be completly wrong, but they might be warforged created with the help of Thelanium, which would explain there high quality. That might mean someone of my world, a member of the house Cannith, could have arrived times ago... well, these all are theories and I have no proof, but they could explain some coicidence, like you having the mark of Making."