A 1st cousin can be a lot older than you. Several of my first cousins had children my age. You can also have a 1st cousin, once removed who is really in your parents' generation. Look at this cousin chart on the Mormon site: https://www.familysearch.org/en/blog/cousin-chart
For proof, you just need to show that you have autosomal DNA matches that are actual relatives of your birth parents. That will take a bit of effort, as so few people on Ancestry doing DNA have done much on their trees. But sometimes they have enough there that you can trace their tree further back.
BTW, I went to Catholic school in 1st grade way back when nuns wore floor length habits and mass was in Latin. We had mass in the mornings before school. My logical mind didn't see the point of using a language I couldn't understand, so I quit going and used that morning time to play.
Keep working at it, and if you want to know anything else, just ask.
A 1st cousin can be a lot older than you. Several of my first cousins had children my age. You can also have a 1st cousin, once removed who is really in your parents' generation. Look at this cousin chart on the Mormon site: https://www.familysearch.org/en/blog/cousin-chart
For proof, you just need to show that you have autosomal DNA matches that are actual relatives of your birth parents. That will take a bit of effort, as so few people on Ancestry doing DNA have done much on their trees. But sometimes they have enough there that you can trace their tree further back.
BTW, I went to Catholic school in 1st grade way back when nuns wore floor length habits and mass was in Latin. We had mass in the mornings before school. My logical mind didn't see the point of using a language I couldn't understand, so I quit going and used that morning time to play.
Keep working at it, and if you want to know anything else, just ask.